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f(g(x))=2x^2-3x+1
Jawab:
(fog) (x) = 2x2-3x+1
= 2(3x+1)2 - 3(3x+1) + 1
= 2(9x2+6x+1) - 9x-3 + 1
= 18x2 + 6x + 1 - 9x - 3 + 1
= 18x2 - 3x - 1