Factoring Polynomials

by Lori
(Ga)

I need to know if these 2 answers are the same. The original problem is: 4x-16xcubed=

answer: 4x(1-4xsquared)


answer: 4x(1-4cubed)

If they are not the same, please walk me thru it. Thanks so much!!!

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Factoring Polynomials

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Nov 02, 2010
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by: Karin

Hi Lori,

No, these two answers are not the same.

It looks like you are factoring this polynomial by using the Greatest Common Factor.

4x - 16x^3

The greatest common factor is 4x. Therefore, if you factor out 4x, you will get:

4x(1 - 4x^2)

Therefore, your first answer is correct.

For more help in factoring using the greatest common factor, please visit:

http://www.algebra-class.com/factoring-polynomials.html

Best of luck,
Karin

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