\( \begin{eqnarray} 10xy^2+15x^2y-5xy & = & 5\left(2xy^2+3x^2y-xy\right) \nonumber \\ & = & 5x\left(2y^2+3xy-y\right) \nonumber \\ & = & 5xy\left(2y+3x-1\right) \end{eqnarray}\)
Very nicely done EMP :))
+1886 
