Question

I need help with #5 please!!

Answer 1

Answer:
`x^(2) +9x+23`

Explanation:

Given equation:

-f(x)+3g(x)

Since the f(x) and g(x) are already given in the problem, all you must do is plug in the values.

`-(-x^(2) -8)+3(3x+5)\\=x^(2) +8+9x+15\\=x^(2) +9x+23`