Question

Given f(x) = x^2 + 3x + 2 and g(x) = 2x^2 -8x +7 What is (f+g)(x)? What is (f-g)(x)?

Answer 1

For f(x)+g(x): 3x^2-5x+9

For f(x)-g(x): -x^2+11x-5

Explanation:

For f(x)+g(x): (x^2+3x+2) + (2x^2-8x+7) = 3x^2-5x+9

For f(x)-g(x): (x^2+3x+2) - 2x^2-8x+7) = -x^2+11x-5

Hope this helps.