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= f (2x)
= (2x) -3
= 2x -3
(g o f) (x) = g (f (x))
= g (x -3)
= 2(x -3)
= 2x -6
b.) (f o g) (x) = f (g (x))
= f (x^2 + 5x -6
= (x^2 + 5x -6) + 2
= x^2 + 5x -4
(g o f) (x) = g (x + 2)
= (x + 2)^2 + 5(x +2) -4
= x^2 + 9x + 10
2. a.) (f o g) (x) = f (x^2 -4)
= (x^2 -4) -3
= x^2 -7
(f o g) (2) = (2)^2 -7
= 4 -7
= -3
b.) (g o f) (x) = g (x -3)
= (x -3)^2 -4
= x^2 -6x + 9
(g o f) (-1) = (-1)^2 -6(-1) + 9
= 2 + 6 + 9
= 17
ket: ^2= pangkat kuadrat
jngn lupa klik jawaban tercerdas yah.. aku butuh.. oke..