Question

Which equation represents a quadratic function?

A.f(x) = 2x - 4 B.f(x) = (x+3)(x - 2)

C.f(x) = 3(4)x-1. D. y = 2x

Answer 1

it's answer is B

Explanation:

f (x)=x (x-2)+3 (x-2)

=x2+x-6