What is the combinationF(x)x2 and g(x)4-x?

Answer 1

if f(x) = x² and g(x) = 4 - x, then:

fg(x) = (4 - x)² = 16 - 8x + x2

gf(x) = 4 - x²

(f+g)(x) = x² + 4 - x

(f - g)(x) = x² - 4 + x

(fg)(x) = 4x² - x³

(f/g)(x) = x²/4 - x (iff x ≠ 4)