Question

If f(x)=-x-2 and g(x)=x^2, what is (g°f)(-6)

Answer 1

$(g \circ f)(x)=(-x-2)^2=x^2+4x+4\\\\ (g\circ f)(-6)=(-6)^2+4\cdot(-6)+4=36-24+4=16$