Question

Which of the following functions does not have

zeros at - 1 and 47.
A.f(x)=x²-3x-4
B. f(x) = 2x² + 6x - 8
C. f(x) = -x² + 3x +4
D.f(x) = 2x² - 6x-8

Answer 1

B

Explanation:

f(-1)=(-1)²-3(-1)-4

f(-1)=1-3(-1)-4

f(-1)=1+3-4

f(-1)=0

Do this same process with all the equations until you find one that doesn't equal 0.