g(x)=4x-6. (gof)(x)=4x^-8x+6. f(-2)= ?
Matematika
Ikhsan8915
Pertanyaan
g(x)=4x-6. (gof)(x)=4x^-8x+6. f(-2)= ?
1 Jawaban
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1. Jawaban EdiHeaven
g(f(x)) = 4x²-8x+6
4(f(x)) - 6 = 4x²-8x+6
4f(x) = 4x²-8x+6+6
f(x) = 4x²-8x+12 / 4
f(x) = x²-2x+3
f(-2)=(-2)²-2(-2)-3
=4+4-3
=5