Help with factorization and dividing polynomials

Quadratic equations and inequalities, variation equations, function notation, systems of equations, etc.
realdreal
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Help with factorization and dividing polynomials

Postby realdreal » Sun Feb 02, 2014 10:28 pm

"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.

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little_dragon
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Re: Help with factorization and dividing polynomials

Postby little_dragon » Mon Feb 03, 2014 12:17 pm

realdreal wrote:"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!
:wave:


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