Question

What are the zeros of f(x) = x2 - x - 20?

Answer 1

(-4,0) and (5,0)

Explanation:

Factor.

f(x) = x^2 -x - 20

Factors of -20 that when are added they equal -1

-5 and 4

(x-5) (x+4)

x=5 and x=-4