Question

$( \frac{x}{y}). ( \frac{x}{y} )$

Answer 1

 

$( \frac{x}{y}). ( \frac{x}{y} )$

 =    X²  
                     Y²

Answer 2

$\left(\begin{array}{c}\dfrac{x}{y}\end{array}\right).\left(\begin{array}{c}\dfrac{x}{y}\end{array}\right)=\left(\begin{array}{c}\dfrac{x}{y}\end{array}\right)^{2}~~~ou~~~\dfrac{x^{2}}{y^{2}}$