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f o g = 2(lX - 1l)² - 1
f o g = 2(X - 1)² - 1
f o g = 2(X² - 2X + 1) - 1
f o g = 2X² - 4X + 2 - 1
f o g = 2X² - 4X + 1
f(g(x)) = 2X² - 4X + 1
g o f = l(2X² - 1) - 1l
g o f = l2X² - 1 - 1l
g o f = l2X² - 2l
g(f(x)) = l2X² - 2l
Rta: 1
f(g(x)) = 2X² - 4X + 1; g(f(x)) = l2X² - 2l