Question

-3 is a zero for the polynomial:
x^3 + 7x^2 + 16 x + 12
True or False

Answer 1

true

Explanation:

If x = - 3 is a zero of the polynomial then f(- 3) = 0

f(x) = x³ + 7x² + 16x + 12

= (- 3)³ + 7(- 3)² + 16(- 3) + 12

= - 27 + 63 - 48 + 12

= 0

Since f(- 3) = 0 then x = - 3 is a zero of the polynomial