x＾2／＾2+y

(x-3y)(-3y-x)-2(x-3y)＾2要过程(x-3y)(-3y-x)-2(x-3y)＾2要过程(x-3y)(-3y-x)-2(x-3y)＾2要过程=-(x-3y)(x+3y)-2(x-3y)

（-x/x-y）＾2乘x＾2-y＾2/x（-x/x-y）＾2乘x＾2-y＾2/x（-x/x-y）＾2乘x＾2-y＾2/x我的回答满意吗?采纳吧

F(x,y)=18x+34y-2x＾2-10y＾2-8xy条件x+y=20000,x>0,y>0x,y取怎样的值时,可以使F(x,y)最大?F(x,y)最大为多少?x,y又分别为多少?F(x,y)=1

先化简再求植:0.5(x+y+2)＾+0.5(x-y-2)(x-y+2)-2(x+y)其中x-y=6,xy=21先化简再求植:0.5(x+y+2)＾+0.5(x-y-2)(x-y+2)-2(x+y)其

已知m／x＾2--y＾2=2xy--y＾2／x＾2--y＾2=x-y／x+y则m=?已知m／x＾2--y＾2=2xy--y＾2／x＾2--y＾2=x-y／x+y则m=?已知m／x＾2--y＾2=2xy

x-y/x-x+y/y-(x+y)(x-y)/y²y/x=2x-y/x-x+y/y-(x+y)(x-y)/y²y/x=2x-y/x-x+y/y-(x+y)(x-y)/y²

已知x＾2y等于3,求2xy(x^5y^2-3x^3y-4x)已知x＾2y等于3,求2xy(x^5y^2-3x^3y-4x)已知x＾2y等于3,求2xy(x^5y^2-3x^3y-4x)2xy(x^5

求方程y”－2y''+y=1+(x+2)e＾x的通解.求方程y”－2y''+y=1+(x+2)e＾x的通解.求方程y”－2y''+y=1+(x+2)e＾x的通解.无法打印相关公式,只提供思路：y”－2y''+

化简y(x+y)+(x+y)(x-y)-x^2化简y(x+y)+(x+y)(x-y)-x^2化简y(x+y)+(x+y)(x-y)-x^2y(x+y)+(x+y)(x-y)-x^2=(x+y)(y+x

因式分解4（x－y）＾2－12（y－x）＋y因式分解4（x－y）＾2－12（y－x）＋y因式分解4（x－y）＾2－12（y－x）＋y后面的y没有平方吗?

化简求值（2X十y）（X一2y）一2x（X十y）其中x,y满足X＾2十y＾2一2X十4y＝一5化简求值（2X十y）（X一2y）一2x（X十y）其中x,y满足X＾2十y＾2一2X十4y＝一5化简求值（2

(x+y)(x-y)-(x-y)^2如题(x+y)(x-y)-(x-y)^2(x+y)(x-y)-(x-y)^2如题(x+y)(x-y)-(x-y)^2(x+y)(x-y)-(x-y)^2如题(x+y

设二元函数z=x＾2+xy+y＾2-x-y,x＾2+y＾2设二元函数z=x＾2+xy+y＾2-x-y,x＾2+y＾2设二元函数z=x＾2+xy+y＾2-x-y,x＾2+y＾2当x=y=-√2/2时x＾

3y/x*x-y*y+x/x*x-2xy+y*y+6y*y/x*x*x-x*x*y-xy*y+y*y*y等于多少?3y/x*x-y*y+x/x*x-2xy+y*y+6y*y/x*x*x-x*x*y-x

因式分解x(x+y)(x-y)-x(x+y)^2因式分解x(x+y)(x-y)-x(x+y)^2因式分解x(x+y)(x-y)-x(x+y)^2x(x+y)(x-y)-x(x+y)^2=x(x+y)[

x＾2（x-y）+4（y-x）因式分解x＾2（x-y）+4（y-x）因式分解x＾2（x-y）+4（y-x）因式分解=x2（x-y）-4（x-y）=（x2-4）（x-y）=（x+2）（x-2）（x-y）

[(x-y)^2-(x+2y)(x-2y)]/y[(x-y)^2-(x+2y)(x-2y)]/y[(x-y)^2-(x+2y)(x-2y)]/y=[（x²-2xy+y²）-（x&#

计算:y-x分之x+y+x-y分之y-y-x分之2x-y计算:y-x分之x+y+x-y分之y-y-x分之2x-y计算:y-x分之x+y+x-y分之y-y-x分之2x-y(x+y)/(y-x)+y/(x

[2x²-(x+y)(x-y)][(-x-y)(y-x)+2y²]其中x=1,y=2数学：[2x²-(x+y)(x-y)][(-x-y)(y-x)+2y²]其中

(x＾2n＋1)+(y^2n+1)能被______整除?A.x-yB.x+yC.x^3+y^3D.x^3-y^3急(x＾2n＋1)+(y^2n+1)能被______整除?A.x-yB.x+yC.x^3