Question

If f(x) = -3x2 - 4x + 8, find f(-6)

Answer 1

-3 × 2- 4x + 8 = -3 × 2 + -4 × -6 + 8 = -6 + 24 + 8 = 10

Answer 2

-76

Explanation:

`f(x) = - 3 {x}^(2) - 4x + 8 \\ f( - 6) = - 3 {( - 6)}^(2) - 4( - 6) + 8 \\ f( - 6) = - 3 {( 36)} + 24+ 8\\ f( - 6) = - 108 + 32\\ f( - 6) = - 76`