Question

Find (f + g)(x) and (f – g)(x).
f(x) = 2x2 – 3+ 7x, g(x) = 11 + 4x²

Answer 1

(f + g)(x) = 2x² - 3 + 7x + 11 + 4x² = 6x² + 7x + 8

(f - g)(x) = 2x² - 3 + 7x - 11 - 4x² = -2x² +7x - 14