g(x)= 2x-4 , gof(x)=4x^2-24x+32, f(-2) adalah
Matematika
IntanFransisca1
Pertanyaan
g(x)= 2x-4 , gof(x)=4x^2-24x+32, f(-2) adalah
1 Jawaban
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1. Jawaban dharmawan14
g(x) = 2x +4 dan gof (x) = 4x^2 -24x +32
gof (x) = 4x^2 -24x + 32
g {f (x) } = 4x^2 -24x + 32
2.f(x) + 4 = 4x^2 -24x +32
2.f(x) = 4x^2 -24x +32 -4
2.f(x) = 4x^2 -24x + 28
f (x) = (4x^2 -24x +28) / 2
f (x) = 2x^2 -12x +14
f (-2) = 2(-2)^2 -12(-2) + 14
= 8 +24 +14
= 46
Jadi f (-2) = 46