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

Multiply -4x^2*(3x^2 + 25x - 7)

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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.

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[The-th]

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[astnjt]

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

[omar-qdvl]

Thanks Man, Your way and how simple your explaining makes you the Best online Teacher

[chantel]

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

[REONJI]

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

[shilpashilpa]

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

[elijahlucian]

can we divide the answer by 4 to simplify?

[ArtemisWhite]

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

[RichesLad]

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

[BoredChinese]

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

[beckyr]

he made the work way more complicated than it is

[alhareth]

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?

[rickysantiago]

why is your back ground black atleast just make it lighter