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g(x) = x²-3x+7
(gof)(2) = g(f(2)) ; f(2) = x²+3x-10
= 2²+3(2)-10
= 4+6-10
= 0
(gof)(2) = g(f(2))
= g(0)
= (0)²-3(0)+7
= 7
g(x) = x² - 3x + 7
f(2) = 2² + 3 . 2 - 10
= 4 + 6 - 10 = 0
(g o f) (2)
= g(f(2))
= g(0)
= 0² - 3 . 0 + 7
= 0 - 0 + 7
= 7
maka (g o f) (2) adalah 7