Question

Find (fof)(3) f(x) = x^2 - x A. 30 B. 6 C. 33 D. -6

Answer 1

Sub x=3 into ((x^2)-x)^2 - (x^2 - x) = 30. So the answer is A.

Answer 2

${3}^{2} - 3 \\ 9 - 3 \\ = 6$