Question

What are the zeros of the polynomial function f(x) = x3 + x2 − 42x?

A. −7, 6

B. −6, 7

C. −6, 0, 7

D. −7, 0, 6

Answer 1

D. -7, 0, 6

Explanation:

`x^3+x^2-42x=0`

`x(x^2+x-42)=0`

`x(x^2-6x+7x-42)=0`

`x(x-6)(x+7)=0`

ZEROS:

x = 0

x = 6

x = -7

Hope this helps!