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Verified answer
(f o g)(x) - (g o f)(x) =f(g(x)) - g(f(x)) =
((x+1)² + 1) - (x² + 1 + 1) =
x² + 2x + 2 - (x² + 2) =
2x ✔️
pilihan jawaban yang juga menghasilkan 2x adalah
(D)
karena 2g(x+1) - 4 = 2((x+1) + 1) - 4 = 2x ✔️
semoga jelas dan membantu