Answer
(a)$F'(-1)=-12$
(b)$G'(-1)=-15$
Work Step by Step
(a)$F(x)=f(g(x))$
$F'(x)=f'(g(x))\times{g'(x)}$
$F'(-1)=f'(g(-1))\times{g'(-1)}$
$F'(-1)=f'(2)\times{-3}$
$F'(-1)=4\times{-3}$
$F'(-1)=-12$
(b)$G(x)=g(f(x))$
$G'(x)=g'(f(x))\times{f'(x)}$
$G'(-1)=g'(f(-1))\times{f'(-1)}$
$G'(-1)=g'(2)\times{3}$
$G'(-1)=-5\times{3}$
$G'(-1)=-15$
