How do you factor 4x^3-8x^2-12x?

1 Answer
Feb 17, 2016

4x(x+1)(x-3)

Explanation:

Since all terms contain at least one x and a multiple of 4, the GCF 4x, which can be factored out.

Rewrite the trinomial.

4x(x^2-2x-3)

Factor the trinomial. Find two numbers that when added equal -2 and when multiplied equal -3. The numbers 1 and -3 fit the requirements.

Rewrite the trinomial in its factored form.

4x(x+1)(x-3)