Question

Sendo f(x)= 2x+1 e g(x)= x²-1, determine:
a) g(f(2))
b) g(g(-2))

Answer 1

a) g(f(2))
f(2) = 2.2+1 = 5
g(f(2)=g(5)=5²-1=24

b)
g(g(-2))
g(-2)=(-2)²-1=3
g(g(-2))=g(3) = 3² - 1 = 8