Question

What is the sum of F(X) and G(x) if F(x) = 8x ^ 3 + 7x ^ 2 - 11x + 20 and G(x) = - 5x ^ 3 - 4x ^ 2 - 17

Answer 1

`3x^(3)+3x^(2)-11x+3`

Explanation:

f(x) + g(x) =
`8x^(3)+7x^(2)-11x+20-5x^(3)-4x^(2)-17`

To make this equation a little less long, we combine like terms

`(8-5)x^(3)+(7-4)x^(2)-11x+(20-17)`

or just

`3x^(3)+3x^(2)-11x+3`