Question

Given f(x) = 2x^2 -3x and g(x) = x+4

What is (fg) (x) ?
A. -2x^2 + x+7
B. 2x^2 + X +1
C. 2x^3 + 8x^2 -3x-12
D. 2x^3 -12

Answer 1

A is the answer to this question. Hope this helps

Answer 2

2x³ + 5x² - 12x

Explanation:

The correct answer doesn't seem to be listed...

(fg)(x) = (2x² - 3x)(x + 4)

Which equals...

2x²(x) + 2x²(4) + (-3x)(x) + (-3x)(4)

Which simplifies to...

2x³ + 8x² - 3x² - 12x

2x³ + 5x² - 12x