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(fog)(x)=9x²-6x+4
Dit f(4)?
(fog)(x)=9x²-6x+4
f(3x-2)=(3x-2)²+6x <<(3x-2)²=9x²-12x+4
f(x)=x²+6x
Dit f(4)=4²+6(4)
=16+24=40
Maaf kalo ada kesalahan