Question

What is the range of the function f(x) = 3x2 + 6x – 8?

Answer 1

Step-by-step explanation:

Find discriminant

$d = {b}^{2} - 4ac$

$= 36 + 96 \\ \\ \\ = 132$

Range is (-d/4a , Infinity)

( -132/12 , Infinity)

Range is (-11, Infinity)