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

Answer:

$3x^{3}+3x^{2}-11x+3$

Step-by-step 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

$3x^{3}+3x^{2}-11x+3$