Jika g(x)=(x-1) dan (fog) (x)=x²+3x+1 , f(x)…..?

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Jika g(x)=(x-1) dan (fog) (x)=x²+3x+1 , f(x)…..?

Jawaban Terkonfirmasi

F(g(x) )= x²+3x+1
f(x-1)=x²+3x+1
f(x) = (x+1)²+3(x+1)+1
= x²+2x+1+3x+3+1
=x²+5x+5