Jika f(x) = x+5 dan (g°f) (x) = x²+2x-22 , tentukan fungsi g (x)

jawab
komposisi fungsi
f(x)= x + 5
gof(x) = x²+ 2x -22
g{(x+5)} = x² + 2x -22
g(x) = (x -5)² + 2(x -5) - 22
g(x) = x² -10x + 25 + 2x -10 - 22
g(x) = x² - 8x -7