Question

Sendo f(x)= 2x²-2 e g(x) = x+5, determine :
A) f(g(x))
B) g(f(-0))

Answer 1

a)
f(g(x)) = 2(x+5)²-2
f(g(x)) = 2(x²+10x+25)-2
f(g(x)) = 2x²+20x+50-2
f(g(x)) = 2x²+20x+48

b)
 g(f(-0))= 2.0²-2+5
 g(f(-0))= 0+3
 g(f(-0))= 3