Type the product of the given functions (fg)(x): f(x) = x^2 − 9 and g(x) = x + 1.

Question

In the space provided, type the answer in descending order as it applies without any spaces between the letters, numbers, or symbols.

Answer 1

Hi Lucy S.,

For (fg)(x), this is the same as f(x)*g(x), and with f(x) = x² - 9 and g(x) = x + 1, we can find (fg)(x).

(fg)(x)=

f(x) * g(x)=

(x²-9)*(x+1)=

(x²)(x)+(x²)(1)+(-9)(x)+(-9)(1)=

x³ + x² -9x - 9

I hope this helps, Joe.