已知xx+y=5,xy=-3,则x^2y+xy^2=

已知xx+y=5,xy=-3,则x^2y+xy^2= 已知xy/x+y=1/2,则代数式3x-5xy+3y/-x+3xy-y= 已知x（x+1)-(xx+y)=3,求(xx+yy)/2-xy的值 已知x-y=4xy，则2x+3xy-2yx-2xy-y 已知2x=3y,求xy/xx+yy-yy/xx-yy的值 已知xy^2=-2,求-xy（x^2y^5-xy^3-y)的值. 已知xy^2=-2 求-xy(x^2y^5-xy^3-y) 已知x+y=5,xy=-3,则x^2y+xy^2, 已知x^2-xy=5,xy-y^2=-3求3(x^2-xy)-xy+y^2 已知xy/x+y=2,则代数式3x-5y+8y/-x+3xy-y的值 已知x+y分之xy=2,那么3x-5xy+3y分之3xy-x-y= 已知x,y是实数,且适合方程(xx+xy-12)(xx+xy-12)+(xy-2yy-1)(xy-2yy-1)=0求x,