suppose the expression x^2+7x+12/(x+2)^2 represents the area of a rectangle
find the expression for the perimeter of the rectangle
Unless it's something really really stupid like you're expected to say
$\displaystyle A = \frac{(x+3)(x+4)}{(x+2)(x+2)} = \left(\frac{x+3}{x+2}\right) \cdot \left(\frac{x+4}{x+2}\right)$
and then you're meant to take $\displaystyle \frac{x+3}{x+2}$ as the length and $\displaystyle \frac{x+4}{x+2}$ as the width.
Which is why I asked what x was.
In which case all I can say is and hope that whoever set the question accidently sets their pants on fire.