## Help with factorization and dividing polynomials

Quadratic equations and inequalities, variation equations, function notation, systems of equations, etc.
realdreal
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Joined: Sun Feb 02, 2014 10:25 pm
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### Help with factorization and dividing polynomials

"Find the factorization of 2x^4+5x^3-20x^2-35x-12 if 2x+1 is one of its factors"
I divide and get x^3 + 2x^2 - 11x - 12 but my answer choices are completely different, stuff like (2x + 1) (x + 4) (x + 3) (x - 1). I believe I have to factor my answer, but I'm not sure how to go about. All my teacher said was to divide the the polynomial by the term and that's all.

little_dragon
Posts: 226
Joined: Mon Dec 08, 2008 5:18 pm
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### Re: Help with factorization and dividing polynomials

"Find the factorization of 2x^4+5x^3-20x^2-35x-12 if 2x+1 is one of its factors"
I divide and get x^3 + 2x^2 - 11x - 12 but my answer choices are completely different, stuff like (2x + 1) (x + 4) (x + 3) (x - 1). I believe I have to factor my answer, but I'm not sure how to go about. All my teacher said was to divide the the polynomial by the term and that's all.
they show how 2 factor polynomials here: http://www.purplemath.com/modules/solvpoly2.htm
they gave U 1 factor. now U have 2 factor whats left after U take out the factor they gave U!