Tentukan rumus fungsi f(x), jika diketahui: g(x) = x+3 dan (f o g) (x) = x2 + 8x + 10

jawab

g(x) = x + 3
fog(X) = x² +8x + 10
f (g(x)) = x² +8x +10
f(x+3) = x² + 8x +10
f(x)= (x - 3)² + 8(x - 3) + 10
f(x) = x²- 6x + 9 + 8x - 24 + 10
f(x)= x²  + 2x - 5 

ANSWER
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