# Factoring Polynomials

• December 7th 2009, 04:10 PM
MikeMcC
Factoring Polynomials
Hey there,

I'm new here, and am having some trouble with factoring. I have already done quadratic trinomials but am having a lot of trouble figuring out polynomials.

Here is one of the questions:

16x³ - 48x² - 9x + 27
Any help would be much appreciated.

Thanks,
Mike
• December 7th 2009, 04:15 PM
TheEmptySet
Quote:

Originally Posted by MikeMcC
Hey there,

I'm new here, and am having some trouble with factoring. I have already done quadratic trinomials but am having a lot of trouble figuring out polynomials.

Here is one of the questions:

16x³ - 48x² - 9x + 27
Any help would be much appreciated.

Thanks,
Mike

factor by grouping

$(16x^3-48x^2)+(-9x+27)=$
$16x^2(x-3)-9(x-3)=(x-3)(16x^2-9)=(x-3)(4x-3)(4x+3)$
• December 7th 2009, 04:15 PM
pickslides
Hi Mike, you should consider the factor theorem in this problem.