若|x+y+3|+(xy+4)`2+0 求（2xy+2y+3）-4[xy+x]-4(y-3xy)

若|x+y+3|+(xy+4)`2+0 求（2xy+2y+3）-4[xy+x]-4(y-3xy) 若（x+1)^2+|y-2|=0,求3x^2-[5xy-(x^2y-3xy)+4x^2y-8xy]的值 若|x-3|+（y+2）=0,则（x-y+4xy/x-y）（x+y-4xy/x+y）的值是 若|x-3|+（y+2）²=0,则（x-y+4xy/x-y）（x+y-4xy/x+y）的值是 若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值 若x-y=4,xy=1,求(-2xy+2x+3y)-(3xy+2y-2x)-(x+4y+xy)的值 若x-y=4,xy=1,则(2x+y-2xy)-(3x+2y+xy)-(4xy+3y-5x)= 若(3xy+2)^2+|7-x-y|=0,求代数式(5xy+10y)-[-5x-(4xy-2y+3x)]的值 若(3xy+2)+|7-x-y|=0,求代数式（5xy+10y）-[-5x-（4xy-2y+3x）]的值. 若3x^2+xy-2y^2=0,求（x+y/x-y+4xy/y^2-x^2)除以(x^2+2xy-3y^2/x^2-9y^2)的值 若（xy-2)²+|3-y|=0,求代数式（5xy-3y)-[5x-(4xy+2y-5x)]的值. 因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y) 若3x-2y=0,则4x/x²-xy+y²=? 已知/X-Y-1/+(XY+3)的平方=0,求(-2XY+2X+3Y)-(3XY+2Y-2X)-(X+4Y+XY)的值!已知/X-Y-1/+(XY+3)的平方=0,求(-2XY+2X+3Y)-(3XY+2Y-2X)-(X+4Y+XY)的值急! 化简：3x^2-[5xy-(x^y-3xy)+4x^2y-8xy] 已知x-y=4xy且xy≠0,求代数式-x-2xy+y分之2x+3xy-2y的值 xy-2{xy-[3x^2y-(4xy^2+0.5xy)]+4x^2y}+6xy^2 （X-3xy+4xy-y）-[-2x-2（xy-3/2xy）-y]+6xy的过程