Algebra 2 - Solving Rational Equations

Solving Rational Equations means knowing how to manipulate fraction (rational) expressions that include variables, in order to solve. We use common denominators, which is your favorite method, OBVI. That means obviously, OBVI. YAY MATH!
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Пікірлер: 120

  • @eccentricone8886
    @eccentricone88868 жыл бұрын

    This guy just seems so passionate about this job, he really seems to /want/ the students to understand what is going on by making things simple. Props to you man.

  • @Qeqezwisdom
    @Qeqezwisdom8 жыл бұрын

    I wish I had him for a teacher. Life would be so much easier

  • @totamahmad3689

    @totamahmad3689

    7 жыл бұрын

    ikr

  • @amie6165

    @amie6165

    6 жыл бұрын

    Qetsia Etienne same. This guy is a great teacher.

  • @yaymath

    @yaymath

    5 жыл бұрын

    You're so kind. The good news is that I kinda am.

  • @socaljusticewarrior558

    @socaljusticewarrior558

    5 жыл бұрын

    @@yaymath You, Brian McLogan, Patrick JMT, you are all my masters.

  • @forevershampoo

    @forevershampoo

    4 жыл бұрын

    @@socaljusticewarrior558 dont forget mathbyfives guy lmao

  • @profdami
    @profdami10 жыл бұрын

    wow you really are a good teacher DONT EVER STOP PLEASE I dont even understand what my teacher is saying half of the time. YAY MATH

  • @tristanjohnson5968
    @tristanjohnson59689 жыл бұрын

    For some reason my bizzare boy math teacher sucks at teacher so now I'm here at 12 am before a test

  • @jimmypacheco4132

    @jimmypacheco4132

    9 жыл бұрын

    same lol

  • @tajiahgallegos6375

    @tajiahgallegos6375

    8 жыл бұрын

    I feel it.

  • @peterparker1683

    @peterparker1683

    8 жыл бұрын

    bruh I'm here 2 hours before my final exam

  • @nathaliaperea3867
    @nathaliaperea38679 жыл бұрын

    SO great! I love the way he takes everything step by step all while being entertaining!

  • @kevbotroberts
    @kevbotroberts8 жыл бұрын

    Spectacular teacher! What a gift to the world! Thank you very much, and YAY MATH!

  • @bryanaustin22
    @bryanaustin229 жыл бұрын

    Keep doing what your doing man awesome work it makes so much sense to me

  • @MrKyleman98
    @MrKyleman9810 жыл бұрын

    Thank you for doing these videos. These are helpful. I watch them because you're entertaining and it helps me pay attention better. Thank you!

  • @CrazyChulo27
    @CrazyChulo2712 жыл бұрын

    Thank you so much! I have seen the majority of your videos and I love them, they have helped me out a lot in my Algebra 2 class!

  • @ponytailsun
    @ponytailsun9 жыл бұрын

    I am struggling horribly with Algebra 2 right now, this really helped and I love your teaching style! It's so engaging and super refreshing compared to my teacher. THANK YOU YAYMATH!!!!

  • @velko4691
    @velko46919 жыл бұрын

    Your the only reason I am passing my Trig class. I love you. God bless.

  • @carminetobiello
    @carminetobiello8 жыл бұрын

    I wish I had a teacher like you man!

  • @socaljusticewarrior558

    @socaljusticewarrior558

    5 жыл бұрын

    Blame the corrupt politicians that oppose school vouchers. There is no good argument against it. School choice is the civil rights issue of our era. No one should be restricted to their garbage school districts because they happen to have an unfortunate area code.

  • @barbaracarlisle7260
    @barbaracarlisle72609 жыл бұрын

    Thank you so much for making this! I watched many videos and this one jogged my memory and I was able to help my daughter! Thank you!

  • @OddAmy
    @OddAmy10 жыл бұрын

    You are a lifesaver! The class is great too, because they ask the questions I'm thinking :)

  • @joncarlosoto8090
    @joncarlosoto809011 жыл бұрын

    Thank you so much for helping me!!!!!! I had so much trouble with this and i have a test on the 2nd and now I finally get it!!!!!!

  • @ladykiller115
    @ladykiller11512 жыл бұрын

    This is in my Algebra I class and this lesson helped me a lot thanks.

  • @biGjuicYheaDpLs
    @biGjuicYheaDpLs4 жыл бұрын

    the teacher that i ever got in life is mean hateful this one is da best

  • @IsThisEvenEdible
    @IsThisEvenEdible10 жыл бұрын

    7:21 15 minus 5 is not 3... if you plug in 15 for x, it will work out but he messed up there

  • @spunkyfada7314
    @spunkyfada73146 жыл бұрын

    Captain, you are fantastic!

  • @cielo3321
    @cielo33218 жыл бұрын

    Thank you now I'm not gonna drink bleach

  • @greypoupon1300
    @greypoupon13007 жыл бұрын

    Bless this man. I like math, but my current math teacher is making me resent it haha. Thanks YayMath!

  • @socaljusticewarrior558
    @socaljusticewarrior5585 жыл бұрын

    I learned this in a book called Practical Algebra: A Wiley Self Teaching guide. It was in a chapter called fractions. In that same chapter, I learned how to divide polynomials. I didn't think I was as far into Algebra II as I am. The only things that the Wiley guide didn't cover were Logarithms, Matrices, and many of the foundations for trig. I obviously needed to go back. I would like to get to a point where I take calculus in my first year of college.

  • @cameronmontemayor9801
    @cameronmontemayor980110 жыл бұрын

    Thanks broham this vid helped out a lot

  • @marlonnakar9183
    @marlonnakar91838 жыл бұрын

    good job you're a great teacher

  • @ghunchakhan5327
    @ghunchakhan53279 жыл бұрын

    thank you! it helped a lot!

  • @rosamontero3807
    @rosamontero38076 жыл бұрын

    Thanks sir, it was really helpful

  • @rhonlopez9857
    @rhonlopez98572 жыл бұрын

    Thank you!!

  • @joeld7398
    @joeld73987 жыл бұрын

    yo this guy is amazing!

  • @mariozamora7223
    @mariozamora72237 жыл бұрын

    4 years later still saving lives with the same video.

  • @maryamadahir1199
    @maryamadahir11997 жыл бұрын

    Man He had so much fun for teaching that damn algebra ;)so does the students.

  • @zinamina7318
    @zinamina73189 жыл бұрын

    Thanks this is helping me with my solving rational equations hw

  • @dailygrindism
    @dailygrindism11 жыл бұрын

    how did you access the quizzes?

  • @Christopher-ym8fo
    @Christopher-ym8fo9 жыл бұрын

    How would you treat the first coefficient 1, in this equation, and would 2x(4) be the common denominator to use? 1 - 3/2x = 7/4

  • @LucidGate72
    @LucidGate728 жыл бұрын

    "I will see you in the afterlife" This just in! Math teacher brutally murders a class of students

  • @ttvurmom6185

    @ttvurmom6185

    5 жыл бұрын

    not funny dude. need to work on comedy. your not jimmy kimmel :d

  • @socaljusticewarrior558

    @socaljusticewarrior558

    5 жыл бұрын

    @@ttvurmom6185 Lol. It wasn't funny until you said it wasn't funny. You even brought up Jimmy Kimmel, which made it so funny that I literally peed myself in public laughing.

  • @Jackiplier
    @Jackiplier11 жыл бұрын

    Now I'm listening to that song in the background! Thaaaaannnnks. lol!

  • @britneycriollo4608
    @britneycriollo46084 жыл бұрын

    I wish my teacher was like him 😩 she only gets mad when we don’t understand and hates repeating herself when we ask for her to repeat b/c we didn’t understand 😏

  • @maranablue2148
    @maranablue21486 жыл бұрын

    Wishing my teach is like this, .

  • @jamessilverio8863
    @jamessilverio88638 жыл бұрын

    YOUR MY DREAM TEACHER XD !!!!!!

  • @SourHDSG

    @SourHDSG

    8 жыл бұрын

    +James Silverio Youre**** your subject needs to be english not math

  • @austinmayo4128

    @austinmayo4128

    8 жыл бұрын

    +SourHD You're**

  • @PenguinBrosa_great_person

    @PenguinBrosa_great_person

    6 жыл бұрын

    +clawedhunter005 ure

  • @jpitt4240
    @jpitt42408 жыл бұрын

    You are my savior

  • @claudeenfarquharson381
    @claudeenfarquharson3814 жыл бұрын

    Could you please work out 1/2+ 2/2x

  • @degekkemarokkaan
    @degekkemarokkaan10 жыл бұрын

    the second example I got the answer x = 25/2 if I put the 15 inside it will not get the answer 5?!

  • @yponjanakilinoc.1011
    @yponjanakilinoc.10118 жыл бұрын

    i wish I have a teacher like dat

  • @abdullahalbraiki9371
    @abdullahalbraiki937110 жыл бұрын

    hey man what happend to 3.5 & 35 and why did you put it as 6

  • @taytay-xj7xm
    @taytay-xj7xm6 жыл бұрын

    Can someone please explain why he wrote down 3/5 @ 7:25 Is it even relevant to the problem or it is just there just to be there?

  • @truthgrace5464

    @truthgrace5464

    5 жыл бұрын

    He is subtracting 3x-5x not 3/5

  • @austinschilling3936
    @austinschilling393610 жыл бұрын

    OK so in the beginning (0:49) you say what is the GCF for the equation, but my math teacher says we need to find the LCM for these types of equations..What difference is there for these, and which one would be easier to use?

  • @reagan6743

    @reagan6743

    8 жыл бұрын

    same thing

  • @barrydavis331

    @barrydavis331

    5 жыл бұрын

    Good catch! Not the same. LCM is used for these problems. LCM of 3 and 9x would be 9x. He corrected the student and immediately made the same mistake. GCF is used to simplify.

  • @harsh2459
    @harsh24594 жыл бұрын

    Everyone think about maths teacher 😱😵 After looking at him : I wish he should be our maths teacher

  • @firewolf727
    @firewolf7279 жыл бұрын

    On that last example wouldn't it have been shorter to cross multiply?

  • @nathanheightz

    @nathanheightz

    9 жыл бұрын

    FireWolf7 you have your way, we only have time to do it this way, DO IT AT HOME ajjajaja

  • @Jackiplier
    @Jackiplier11 жыл бұрын

    Yay Math!

  • @ianbrandsdorfer4837
    @ianbrandsdorfer483710 жыл бұрын

    What is 6/x-9/x-1=1/4 ?

  • @WollyTheCow
    @WollyTheCow12 жыл бұрын

    Yay Math! :D

  • @shadaaineko1963
    @shadaaineko196310 жыл бұрын

    but arent you supossed to multiply the x-5 times the numerator too?help im confused

  • @tinac.8711

    @tinac.8711

    10 жыл бұрын

    The point was to get no fractions so it would be easier (:

  • @sugma8571
    @sugma85717 жыл бұрын

    What do you mean by 6 cancels with 6

  • @Emk315

    @Emk315

    7 жыл бұрын

    6 divided by 6 =1

  • @directionerforever4556
    @directionerforever45569 жыл бұрын

    How do you solve this problem , i am really confused (4a^3b /a^2 b^3) ( 3b^2 /2a^2 b^4) . I wish your my teacher, YOUR AWSOME .

  • @cici5060
    @cici50608 жыл бұрын

    I don't know how you can do what you did to solve 3x+5=2x but when I solved it, I had 5 instead of -5. I googled it and it said 5 was the correct answer. So....Please tell me what is correct and what is incorrect because I have to study for a test.

  • @drewmiller6284

    @drewmiller6284

    8 жыл бұрын

    subtract 2x from the 3x on the left side, so now you are left with x+5=0 now you need to subtract 5 to both sides, so you have x=-5

  • @hatesnakeue9746
    @hatesnakeue97468 жыл бұрын

    Can't you cross multiply the two fractions ?

  • @123ausfart

    @123ausfart

    6 жыл бұрын

    no because this is an equation. you could do that if the equal sign was a divide sign.

  • @bbw1979

    @bbw1979

    6 жыл бұрын

    He did, essentially.

  • @hera6511
    @hera6511 Жыл бұрын

    Why is x2 -12 Equal to x2?

  • @monicaelizondo9664
    @monicaelizondo96649 жыл бұрын

    can you teach at my school please lol my math teacher doesn't teach and is so boring and does the exact same thing everyday. just different math

  • @gurprianijhar1896
    @gurprianijhar189610 жыл бұрын

    Is this Algebra 2 or Algebra 1?

  • @Jackiplier
    @Jackiplier11 жыл бұрын

    I use these videos for my math classes. no one, no one, no oooooone.... XD

  • @TonjaP
    @TonjaP4 жыл бұрын

    7:21 is 4.5=4.5

  • @angelmendez-rivera351
    @angelmendez-rivera3513 жыл бұрын

    When solving an equation like 3·x/(x - 5) = 5 - 5/(x - 5), I would recommend to not multiply by the least common multiple like it is being taught. The problem with this is that it often introduces extraneous solutions to the equation, and it can make the solving process more difficult, by making you solve polynomials with a degree higher than the number of solutions. I would recommend (1) bringing every fraction to the same side of the equation, so 3·x/(x - 5) = 5 - 5/(x - 5) 5 - 5/(x - 5) - 3·x/(x - 5) = 0. (2) combine all the fractions into a single fraction, which can be done when the fractions have a common denominator. You can achieve this is if you rewrite 5 as 5·(x - 5)/(x - 5), or as (5·x - 25)/(x - 5). So a student can write (5·x - 25 - 5 - 3·x)/(x - 5) = 0, which can be simplified to (2·x - 30)/(x - 5) = 0, or even 2·(x - 15)/(x - 5) = 0. (3) divide out the common factors. In this particular exercise, there are no common factors other than 1, but in other exercises, this step would be necessary. (4) multiply by the denominator on both sides of the equation. This gives 2·(x - 15) = 0, which is easy to solve. This method works for all rational equations, has the same amount of steps as the standard method, sometimes less, and it avoids introducing extraneous solutions. For example, when solving x/(x + 2) = 6/(x + 5), you can write x/(x + 2) - 6/(x + 5) = 0, and combine fractions by writing x/(x + 2) - 6/(x + 5) = [x·(x + 5) - 6·(x + 2)]/[(x + 5)·(x + 2)] = (x^2 - x - 12)/[(x + 5)·(x + 2)]. So you get to write (x^2 - x - 12)/[(x + 5)·(x + 2)] = 0, which is just a single fraction. Next, you want to factor and divide out the common factors. x^2 - x - 12 = (x + 3)·(x - 4), so (x + 3)·(x - 4)/[(x + 5)·(x + 2)] = 0. Since there are no common factors, it is now that you can actually multiply by the denominator, and simply obtain (x + 3)·(x - 4) = 0. This guarantees that neither of these is extraneous.

  • @nilsolsen8727

    @nilsolsen8727

    2 жыл бұрын

    Can you make a video? I would watch it.

  • @paulacristi2906
    @paulacristi2906 Жыл бұрын

    I didn’t understand where is 3x?

  • @afg229
    @afg2298 жыл бұрын

    what school does this guy teach at?

  • @seyiojewale7907

    @seyiojewale7907

    8 жыл бұрын

    +afg229 yay school

  • @KyloRG59

    @KyloRG59

    8 жыл бұрын

    +afg229 he said he lives in Malibu, which is in LA, so its a school in California

  • @afg229

    @afg229

    8 жыл бұрын

    David Coupel yeah i found out where he teaches

  • @reagan6743

    @reagan6743

    8 жыл бұрын

    +David Coupel that explains why the kids are so annoying… they're from California

  • @afg229

    @afg229

    8 жыл бұрын

    Reagan D shitty logic

  • @Sarah-un4bh
    @Sarah-un4bh5 жыл бұрын

    It’s a not a greatest common factor it’s a least common multiple -Kashish

  • @eiram7483
    @eiram74837 жыл бұрын

    6x-6x is twelve??how??

  • @cameroncarlyle3779
    @cameroncarlyle37795 жыл бұрын

    Adam sandler as a math teacher

  • @BirdTurd314
    @BirdTurd31411 жыл бұрын

    0:48 he should have said LCM not GCF

  • @162killaa
    @162killaa10 жыл бұрын

    kkkk

  • @bangznilisashsh2469
    @bangznilisashsh24697 жыл бұрын

    at 7:03 where did he find that -5x???!! PLEASE ANSWER ME BECAUSE IM GOING TO REPORT THIS IM CRYING

  • @mohammedali-ur1vu

    @mohammedali-ur1vu

    7 жыл бұрын

    from the last fraction -5 is the only thing that is left

  • @tyrohellion

    @tyrohellion

    6 жыл бұрын

    IM UR BWI there is no hope for you I'm sorry

  • @Jackiplier
    @Jackiplier11 жыл бұрын

    Opmathera? XD I'm a comment junkie... I will comment on anything funny in the videos I see.

  • @MagnusTheGreat
    @MagnusTheGreat7 жыл бұрын

    Guys! X^2 + # CANT be factored. X^2 - # CAN be factored! This fucked me up on a test and I failed it.

  • @veronicam874
    @veronicam8748 жыл бұрын

    too bad my math tests are way harder than this :|

  • @tinac.8711
    @tinac.871110 жыл бұрын

    Oh my God thank you!!! I was about to shoot myself

  • @spartanstriker7124
    @spartanstriker712411 жыл бұрын

    ow omg 666 that number

  • @sonofjesus1464
    @sonofjesus14648 жыл бұрын

    Not all of rational equations are being taught but I know all of it from my textbook. It's more complicated than what he taught like he forgot to teach the x cannot be part because that matters as well

  • @tani4925
    @tani49259 жыл бұрын

    I'm don't understand any of this...

  • @EpicGamerMan666
    @EpicGamerMan6666 жыл бұрын

    WTF is this and cen someone tell me how to do this? y=5x-9/3x+4

  • @EpicGamerMan666

    @EpicGamerMan666

    6 жыл бұрын

    for x

  • @turgeoncharlie
    @turgeoncharlie10 жыл бұрын

    3 does not go into 16 evenly. Sorry simsek cool

  • @cougarboi2915
    @cougarboi29155 жыл бұрын

    IM 12, WTF

  • @TaCkLeZdEm
    @TaCkLeZdEm10 жыл бұрын

    You should stop saying over nothing/multiply by nothing. When you clear the denominator, it's still over one, not nothing. When you don't multiply because the denominator is already the lowest common denominator, you multiply by 1, not nothing.

  • @haroldbaggins

    @haroldbaggins

    8 жыл бұрын

    Kiss my ass

  • @tinac.8711
    @tinac.871110 жыл бұрын

    Oh my God thank you!!! I was about to shoot myself