Answer:
-0.48
Step-by-step explanation:
x^3 - x^2 - 6x
First, add f +g
x^2 + 1 + 5 -x (combine like terms)
x^2 - x +6
Next, multiply the new equation by x
x(x^2 - x + 6) Use distributive property
= x^3 - x^2 + 6x
7.5