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= f(x^2 + 2x - 24)
= x^2 + 2x - 24 + 2
= x^2 + 2x - 22
(g o f) = g(f(x))
= g (x+2)
= (x+2)^2 + 2(x+2) - 24
= x^2 + 4x + 4 + 2x + 4 - 24
= x^2 + 6x - 16
coba pahamin lg yaa
maka = x^2 +2x-24+2
= x^2 + 2x - 22
kalo g o f = fnya yg dimasukin ke xnya si g
maka =(x+2)^2 + 2.(x+2) - 24
= x^2 +4x+4+2x+4-24
x^2+6x-16