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Verified answer
(g o f)(x) = 9x² - 36x + 36DItanya g(x) = ....
f(x) = 3x - 7
g(x) = (3x - 7)²
= 9x² - 42x + 49
= 9x² - 42x + 2(3x - 7) + 49
= 9x² - 42x + 6x - 14 + 49
= 9x² - 42x + 6x + 35 + (1)
Ambil yang posisi dikurung
Sehingga g(x) = x² + 2x + 1 .... ( C )
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