Question

f(x) = 4x + 6, g(x) = 2x2
Find (fg)(x).
A.8x3 + 12x2
B. 2x2 + 4x + 6
C. 8x + 12
D. 8x2 + 12x

Answer 1

Any ideas?

Answer 2

C?

Answer 3

multiply
use parentheses

Answer 4

\[(4x+6)2x^2=?\]

Answer 5

Multiply (4x+6)(2x^2)=8x^3+12x^2

Answer 6

What do you get?

Answer 7

so A?

Answer 8

Yep :)

Answer 9

Do you understand why?

Answer 10

thank you and yes, I can see how you'd get that. It makes soo much sense :)

Answer 11

Perfect!