Question

Sendo f(x)=x²+2x+1 e g(x)=-2x+1 obtenha f(g(x))

Answer 1

f(x)=x²+2x+1 e g(x)=-2x+1 obtenha f(g(x))

= (-2x+1)^2 + 2.(-2x+1) + 1
= (-2x +1).(-2x +1) - 4x + 2 + 1
= 4x^2 - 2x - 2x + 1 - 4x + 3
= 4x^2 - 4x - 4x + 4
= 4x^2 - 8x + 4