Question

Factor completely. 2x^2 − 7x − 4

Answer 1

(2x + 1) (x - 4)

Explanation:

2x² - 7x - 4.

need two number that add up to -7, but that multiply together to get -4.

(2x + 1) (x - 4) = 2x² - 4(2x) + x - 4 = 2x² - 8x + x - 4 = 2x² - 7x - 4