Question 368205
Let's simplify first.
{{{(2x-14)/(x^2-4x-21)=(2(x-7))/((x-7)(x+3))}}}
{{{(2x-14)/(x^2-4x-21)=2/(x+3))}}}
So then,
{{{((2x-14)/(x^2-4x-21))/(x+3)=(2/(x+3))/(x+3)}}}
{{{((2x-14)/(x^2-4x-21))/(x+3)=highlight(2/(x+3)^2)}}}