Question 929877
Functions {{{f}}} and {{{g}}} are inverses if {{{f(g)=g(f)=x}}}
{{{f(g)=(x+3)^2-9=(x^2+6x+9)-9=x^2+6x}}} <-- Not equal to {{{x}}}.
{{{g(f)=(x^2-9)-3=x^2-12}}} <--- Also not equal to {{{x}}}.
They are not inverses.