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
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.
I wish I had him for a teacher. Life would be so much easier
@totamahmad3689
7 жыл бұрын
ikr
@amie6165
6 жыл бұрын
Qetsia Etienne same. This guy is a great teacher.
@yaymath
5 жыл бұрын
You're so kind. The good news is that I kinda am.
@socaljusticewarrior558
5 жыл бұрын
@@yaymath You, Brian McLogan, Patrick JMT, you are all my masters.
@forevershampoo
4 жыл бұрын
@@socaljusticewarrior558 dont forget mathbyfives guy lmao
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
For some reason my bizzare boy math teacher sucks at teacher so now I'm here at 12 am before a test
@jimmypacheco4132
9 жыл бұрын
same lol
@tajiahgallegos6375
8 жыл бұрын
I feel it.
@peterparker1683
8 жыл бұрын
bruh I'm here 2 hours before my final exam
SO great! I love the way he takes everything step by step all while being entertaining!
Spectacular teacher! What a gift to the world! Thank you very much, and YAY MATH!
Keep doing what your doing man awesome work it makes so much sense to me
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!
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!
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!!!!
Your the only reason I am passing my Trig class. I love you. God bless.
I wish I had a teacher like you man!
@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.
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!
You are a lifesaver! The class is great too, because they ask the questions I'm thinking :)
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!!!!!!
This is in my Algebra I class and this lesson helped me a lot thanks.
the teacher that i ever got in life is mean hateful this one is da best
7:21 15 minus 5 is not 3... if you plug in 15 for x, it will work out but he messed up there
Captain, you are fantastic!
Thank you now I'm not gonna drink bleach
Bless this man. I like math, but my current math teacher is making me resent it haha. Thanks YayMath!
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.
Thanks broham this vid helped out a lot
good job you're a great teacher
thank you! it helped a lot!
Thanks sir, it was really helpful
Thank you!!
yo this guy is amazing!
4 years later still saving lives with the same video.
Man He had so much fun for teaching that damn algebra ;)so does the students.
Thanks this is helping me with my solving rational equations hw
how did you access the quizzes?
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
"I will see you in the afterlife" This just in! Math teacher brutally murders a class of students
@ttvurmom6185
5 жыл бұрын
not funny dude. need to work on comedy. your not jimmy kimmel :d
@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.
Now I'm listening to that song in the background! Thaaaaannnnks. lol!
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 😏
Wishing my teach is like this, .
YOUR MY DREAM TEACHER XD !!!!!!
@SourHDSG
8 жыл бұрын
+James Silverio Youre**** your subject needs to be english not math
@austinmayo4128
8 жыл бұрын
+SourHD You're**
@PenguinBrosa_great_person
6 жыл бұрын
+clawedhunter005 ure
You are my savior
Could you please work out 1/2+ 2/2x
the second example I got the answer x = 25/2 if I put the 15 inside it will not get the answer 5?!
i wish I have a teacher like dat
hey man what happend to 3.5 & 35 and why did you put it as 6
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
5 жыл бұрын
He is subtracting 3x-5x not 3/5
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
8 жыл бұрын
same thing
@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.
Everyone think about maths teacher 😱😵 After looking at him : I wish he should be our maths teacher
On that last example wouldn't it have been shorter to cross multiply?
@nathanheightz
9 жыл бұрын
FireWolf7 you have your way, we only have time to do it this way, DO IT AT HOME ajjajaja
Yay Math!
What is 6/x-9/x-1=1/4 ?
Yay Math! :D
but arent you supossed to multiply the x-5 times the numerator too?help im confused
@tinac.8711
10 жыл бұрын
The point was to get no fractions so it would be easier (:
What do you mean by 6 cancels with 6
@Emk315
7 жыл бұрын
6 divided by 6 =1
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 .
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
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
Can't you cross multiply the two fractions ?
@123ausfart
6 жыл бұрын
no because this is an equation. you could do that if the equal sign was a divide sign.
@bbw1979
6 жыл бұрын
He did, essentially.
Why is x2 -12 Equal to x2?
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
Is this Algebra 2 or Algebra 1?
I use these videos for my math classes. no one, no one, no oooooone.... XD
7:21 is 4.5=4.5
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
2 жыл бұрын
Can you make a video? I would watch it.
I didn’t understand where is 3x?
what school does this guy teach at?
@seyiojewale7907
8 жыл бұрын
+afg229 yay school
@KyloRG59
8 жыл бұрын
+afg229 he said he lives in Malibu, which is in LA, so its a school in California
@afg229
8 жыл бұрын
David Coupel yeah i found out where he teaches
@reagan6743
8 жыл бұрын
+David Coupel that explains why the kids are so annoying… they're from California
@afg229
8 жыл бұрын
Reagan D shitty logic
It’s a not a greatest common factor it’s a least common multiple -Kashish
6x-6x is twelve??how??
Adam sandler as a math teacher
0:48 he should have said LCM not GCF
kkkk
at 7:03 where did he find that -5x???!! PLEASE ANSWER ME BECAUSE IM GOING TO REPORT THIS IM CRYING
@mohammedali-ur1vu
7 жыл бұрын
from the last fraction -5 is the only thing that is left
@tyrohellion
6 жыл бұрын
IM UR BWI there is no hope for you I'm sorry
Opmathera? XD I'm a comment junkie... I will comment on anything funny in the videos I see.
Guys! X^2 + # CANT be factored. X^2 - # CAN be factored! This fucked me up on a test and I failed it.
too bad my math tests are way harder than this :|
Oh my God thank you!!! I was about to shoot myself
ow omg 666 that number
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
I'm don't understand any of this...
WTF is this and cen someone tell me how to do this? y=5x-9/3x+4
@EpicGamerMan666
6 жыл бұрын
for x
3 does not go into 16 evenly. Sorry simsek cool
IM 12, WTF
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
8 жыл бұрын
Kiss my ass
Oh my God thank you!!! I was about to shoot myself