作业帮-(x^2-y^2)(x+y)-(y-x)^3怎么做
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-(x^2-y^2)(x+y)-(y-x)^3怎么做
-(x^2-y^2)(x+y)-(y-x)^3怎么做
-(x^2-y^2)(x+y)-(y-x)^3怎么做
马克一下 图片发给你
是化简吧。平方差，开括号，开三次方。
-(x^2-y^2)(x+y)-(y-x)^3
=(y-x)(x+y)²-(y-x)³
=(y-x)[(x+y)²-(y-x)²]
=(y-x)[x²＋2xy＋y²-y²＋2xy-x²]
=4xy(y-x)
一（X十y）（X一y）（X十y）一（y一X）＾3＝（X十y）＾2（y一X）一（y一X）＾3＝（y一X）［（X十y）＾2一（X一y）＾2］＝（y一X）［（X十y十X一y）（X十y一X十y）］＝（y一X）4Xy
这什么意思
-(x^3+x^2y-y^2x-y^3)-(y^3-3xy+x^3)=-x^3-x^2y+y^2x+y^3-y^3+3xy-x^3=-2x^3-x^2y+y^2x-3xy
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
化简y(x+y)+(x+y)(x-y)-x^2
(x+y)(x-y)-(x-y)^2如题 (x+y)(x-y)-(x-y)^2
【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y)
因式分解x(x+y)(x-y)-x(x+y)^2
[(x-y)^2-(x+2y)(x-2y)]/y
计算:y-x分之x+y+x-y分之y-y-x分之2x-y
x^2(x-y)+(y-x)
x(x-y)2-(y-x)3
【(x-y)^2+(x+y)(x-y)】除以 2x
[(x-y)²+(x+y)(x-y)]除以2x
[2/3x-2/x+y(x+y/3x-x-y)]/x-y/x
化简：{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x
计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x
化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x
化简：[(x+y)(x-y)(x+y)^2-2y(x-2y)](-2y) 谢谢!
计算：[(x+y)(x-y)-(x-y)^2+2y(x-y)]/(-2y)
[(-x-y)(-x+y)-(x+y)^2-x(y-y^2)}÷1/2y