设|X-2|+(Y+1/4)^2=0,试求代数式X^2(X^2-XY+Y)-X(X^3-2X^2Y+XY-1)
设|X-2|+(Y+1/4)^2=0,试求代数式X^2(X^2-XY+Y)-X(X^3-2X^2Y+XY-1)
设x-2的绝对值+(y+1/4)平方=0,试求代数式x²(x²-xy+y)-x(x³-2x
已知x+y=-1,xy=-2,求代数式-5(x+y)+(x-y)+x(xy+y)的值
设|X-2|+(Y+1/4)^2=0,试求代数式X^2(X^2-XY+Y)-X(X^3-2X^2Y+XY-1)的值.
xy=-2,x+y=3,求代数式(4xy+12y)+[7x-(3xy+4y-x)]
若(x*x+y*y)(x*x+y*y)-4x*x*y*y=0,求代数式(x*x+5xy+y*y)/(x*x+2xy+y*
已知x+y=-1,xy=-2,求代数式-5(x+y)+(x-y)+2(xy+y)的值
已知X+Y=-1,xy=-2,求代数式-5(x+y)+(x-y)+(xy+y)的值
已知xy/x+y=1/2,则代数式3x-5xy+3y/-x+3xy-y=
已知2x+3y=0,求代数式1.5x+4y/3x-2y 2.x²+xy-y²/x²-xy+
已知x-y=1 求代数式x^4-xy^3-x^3y-3x^2y+3xy^2+y^4的值
设x+y=5,xy=负3,求代数式(2x减3y减2xy)减(x减4y+xy)的值