The equation f (x ) = -6x2– 24x + 72 representsa quadratic function.What is the value of the positive zero of the function?

Question

A. 2
B. 4
C. 6
D. 8

Answer 1

-3 x^2 - 12 x + 36 = 0
- x^2 - 4 x + 12 = 0
x^2 + 4 x - 12 = 0
(x+6)(x-2) = 0
x = +2 or -6