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maaf kalaw salah ....di koreksi kalau ada yang salah...
》g(f(x))
》g(x-2)
》(x-2)^2 + 4(x-2) -3
》(x^2 -4x+4) + (4x-8) -3
》x^2-7
》(g¤f)(x) = 2
》 x^2 - 7= 2
》 x^2 - 9= 0
》 x = akar 9
》 x = 3