2011SP-I-01

16-06-2021 app.cch No Comments

Ans:

\frac{x^{7}}{y^{4}}

\begin{array}{rcl} \frac{(x y)^{2}}{x^{- 5} y^{6}} & = & \frac{x^{2} y^{2}}{x^{- 5} y^{6}} \\ = & x^{2 - (- 5)} y^{2 - 6} \\ = & x^{7} y^{- 4} \\ = & \frac{x^{7}}{y^{4}} \end{array}