Question

Select all the functions that have f(−3) = 0.

A. f(x) = (x − 3)^2
B. f(x) = −x^2 − 3x
C. f(x) = −(x + 3)^2
D. f(x) = x^2 + 5x + 4
E. f(x) = 2x − 3(x + 1)
F. f(x) = −2(x − 2) + 3x

Answer 1

B, C, E

Explanation:

there is not much to say and explain.

when you put -3 into the place of x and do the calculations, you see.

-(-3)² - 3×-3 = -9 + 9 = 0

-(-3 + 3)² = -(0)² = 0

2×-3 - 3(-3 + 1) = -6 - 3(-2) = -6 + 6 = 0