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f(x)=4x-1
(f○g)(x)=f[g(x)]
4(x^2+8x-2)-1
4x^2+32x-8-1
4x^2+32x-9
(f○g)(2)= 4.2.2+32.2-9
16+64-9=71:)
dicek dulu ya mungkin ada yang salah:)
fog(x) = 4(x² + 8x - 2) - 1
fog(x) = 4x² + 32x - 8 - 1
fog(x) = 4x² + 32x - 9
cari fog(2)
fog(2) = 4(2)² + 32 (2) - 9
fog(2) = 4(4) + 64 - 9
fog(2) = 16 + 64 - 9
fog(2) = 71