Example 3: Multiplying a monomial by a polynomial | Algebra I | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing-and saving your progress-now: www.khanacademy.org/math/alge...
Multiply -4x^2*(3x^2 + 25x - 7)
Practice this lesson yourself on KhanAcademy.org right now:
www.khanacademy.org/math/alge...
Watch the next lesson: www.khanacademy.org/math/alge...
Missed the previous lesson?
www.khanacademy.org/math/alge...
Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to Khan Academy’s Algebra channel:
/ channel
Subscribe to Khan Academy: kzread.info_...

Пікірлер: 52

  • @dino4603
    @dino46034 ай бұрын

    Due tysm! I was so mad because my teacher didn't explain our work properly and we didn't know what to do or how to do it. Khan Academy to the rescue every time!

  • @astnjt9950
    @astnjt99506 жыл бұрын

    *2-hour discussion* I dont get it *2-minute video* I fully understand it thanks

  • @prettiestgirlinksa

    @prettiestgirlinksa

    6 жыл бұрын

    AstinJT I KNOW RIGHT?!LITERALLY WAS LIKE “ omg he did it like it was nothing and i have been struggling with it since months

  • @watashiwannadie7085

    @watashiwannadie7085

    6 жыл бұрын

    Ikr lol

  • @megaalphagoop

    @megaalphagoop

    4 жыл бұрын

    AstinJT Can you away I guess it helps to register it in a more simple fashion rather with an overly detailed/complex hard to understand hour long discussion . In a way the video just gets straight to the point without taking themselves too seriously, a two hour discussions is nice and all but at some point you’ll lose interest trying to keep track with everything without having the privilege to take a break to register what you just learnt. if that makes any sense?👀🤙

  • @aligamiles

    @aligamiles

    3 жыл бұрын

    Yeah I wish our math teacher did it this quick

  • @IsaacHND

    @IsaacHND

    2 жыл бұрын

    @@aligamiles i guess i'm lucky because he actually made us watch this video instead of he having to explain the topic

  • @REONJI
    @REONJI5 жыл бұрын

    That really good I don't think its that easy Omg my teacher don't know how to teach...

  • @james7882
    @james78823 жыл бұрын

    Your better then my math teacher.

  • @Millieonabag

    @Millieonabag

    3 жыл бұрын

    lol

  • @hsa7amenahg795
    @hsa7amenahg7954 ай бұрын

    2024 anyone besides me ?

  • @chantel2689
    @chantel26899 жыл бұрын

    Thank you!! I like the way you write your x's :))

  • @aligamiles
    @aligamiles3 жыл бұрын

    Thank you

  • @prettiestgirlinksa
    @prettiestgirlinksa6 жыл бұрын

    HELPED SO MUCH THANK YOU

  • @shilpashilpa1273
    @shilpashilpa12736 жыл бұрын

    Maths is like a playing whan you will teach you will teach very nice

  • @RichesLad
    @RichesLad2 ай бұрын

    Bro THANK YOU SO MUCH I WAS ABLE TO ANSWER MY ASSIGNMENT AND I FOUND IT NOT HELPFUL I DIDN'T UNDERSTAND AT ALL

  • @beckyr5055
    @beckyr50554 жыл бұрын

    he made the work way more complicated than it is

  • @elijahlucian
    @elijahlucian2 жыл бұрын

    can we divide the answer by 4 to simplify?

  • @elijahlucian

    @elijahlucian

    2 жыл бұрын

    nvm I tihnk I understand why you can't

  • @stizzy6372
    @stizzy63723 жыл бұрын

    Pog

  • @Aiden-yt9tn
    @Aiden-yt9tn5 жыл бұрын

    Thx G

  • @paulceltics
    @paulceltics13 жыл бұрын

    thanks

  • @Billlvv1
    @Billlvv14 ай бұрын

    يستوذ ما فهمت عيد الشرح عندي اختبار

  • @mirzijayrexhar8814
    @mirzijayrexhar88144 жыл бұрын

    Thank you!!!!!!!!!!

  • @torbmain8628
    @torbmain86287 жыл бұрын

    danks.

  • @vhorceful1501
    @vhorceful15014 жыл бұрын

    Omg thank you

  • @ArtemisWhite
    @ArtemisWhite3 жыл бұрын

    We will see how this video works for tomorrows math test 😀

  • @bat8411

    @bat8411

    3 жыл бұрын

    whatd you get on the test

  • @ArtemisWhite

    @ArtemisWhite

    3 жыл бұрын

    @@bat8411 50

  • @coryl3075

    @coryl3075

    3 жыл бұрын

    @@ArtemisWhite RIP

  • @samass5350

    @samass5350

    3 жыл бұрын

    50 out of what???

  • @gigachad229

    @gigachad229

    Жыл бұрын

    A

  • @Logben
    @Logben3 жыл бұрын

    This is an old one

  • @louderwithgunpowder8096
    @louderwithgunpowder80967 жыл бұрын

    help

  • @alhareth1710
    @alhareth1710 Жыл бұрын

    Someone help I don't get how the symbols change, the equation is 4x + (3x + 25x -7)but when he was multiplying he made it plus instead?

  • @gigachad229

    @gigachad229

    Жыл бұрын

    a

  • @rahulmalode8911

    @rahulmalode8911

    Жыл бұрын

    If there is minus outside the bracket the signs inside are changed so -7 became +7

  • @Katherine_2509

    @Katherine_2509

    10 ай бұрын

    If you are talking about the final result, its not a plus its a positive the same to the other symbol at the end it is not a minus, its a negative

  • @BoredChinese
    @BoredChinese12 жыл бұрын

    @khanacademy How is it (-4x^2.3x^2)+(-4x^2.25x).... how do you know if it's + or - ? Please reply..

  • @builderJP1

    @builderJP1

    7 жыл бұрын

    You should ask it on the Khan Academy website, not the KZread channel

  • @monoxx6924

    @monoxx6924

    6 жыл бұрын

    majd hamad racist

  • @anthonysantos1281

    @anthonysantos1281

    5 жыл бұрын

    its +

  • @iexisted583

    @iexisted583

    2 жыл бұрын

    It's - because that's the main symbol of equations answer

  • @rickysantiago6382
    @rickysantiago63823 жыл бұрын

    why is your back ground black atleast just make it lighter

  • @entertaineranimations
    @entertaineranimations8 ай бұрын

    who else is watching this in 2023

  • @LingeringFart69

    @LingeringFart69

    7 ай бұрын

    Me

  • @MangomilkEhehehe

    @MangomilkEhehehe

    7 ай бұрын

    real

  • @justbeinglowkey6314
    @justbeinglowkey63146 жыл бұрын

    Thank you