Diketahui f(x) = 3 – x, g(x)

Diketahui f(x) = 3 – x, g(x) = x2 + 2x – 5, dan h(x) = 2x + 1. Nilai (g o h o f)(2) = ….
A.5
B.10
C.15
D.20
E.25
Pembahasan:
f(x) = 3 – x
g(x) = x2 + 2x – 5
h(x) = 2x + 1
(g o h o f)(2)
= (g o h)(3 – 2)
= (g o h)(1)
= g(2 . 1 + 1)
= g(3)
= 32 + 2 . 3 – 5
= 9 + 6 – 5
= 10
Jawaban: B
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