Question

Let f(x) = x2 + 3x - 4 and g(x) = x + 5. Find f(x) · g(x).

Answer 1

just multiply
(x^2+3x-4)*(x+5)

Answer 2

?

Answer 3

x^3+5x^2+3x^2+15x-4x-20
x^3+8x^2+11x-20

Answer 4

\[x^{3}+8x^{2}+11x-20?\]

Answer 5

\(f(x)=x^2+3x-4\\
g(x)=x+5\)

\(f(x)\times g(x)=(x^2+3x-4)(x+5)=\)
\(=x^3+5x+3x^2+15x-4x-20\\
=\color{blue}{x^3+3x^2+16x-20}\)

Answer 6

You have to distribute each of the terms individually.

Answer 7

I'm so sorry, my internet cut out and I wasn't able to reply

Answer 8

No worries, might not be your internet though. This site has been known to wig out on occasion.