How do you factor the trinomial -5x^3+15x^2+20x?

1 Answer
Mar 29, 2018

-5x(x-4)(x+1)

Explanation:

first look for something that all the terms have in common and factor out ----------- every term can factor out -5x

after you factor -5x you have ----------- -5x(x^2-3x-4)

to factor the binomial you think of factors of -4 such that the sum would be -3. --------- (1)(-4)=-4 and 1-4=-3

therefore the overall answer is -5x(x-4)(x+1)