Question 191428
{{{(2x^2y-5xy^2+2)-(-x^2y+2xy^2+2)}}}
={{{2x^2y-5xy^2+2+x^2y-2xy^2-2)}}}
={{{2x^2y+x^2y-5xy^2-2xy^2+2-2}}}
={{{3x^2y-7xy^2}}}