作业帮(x-y)[(x+y)^2-xy]+(x-y)[(x-y)^2+xy]
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(x-y)[(x+y)^2-xy]+(x-y)[(x-y)^2+xy]
(x-y)[(x+y)^2-xy]+(x-y)[(x-y)^2+xy]
(x-y)[(x+y)^2-xy]+(x-y)[(x-y)^2+xy]
解
原式
=(x-y)[(x+y)²-xy+(x-y)²+xy]
=(x-y)[(x+y)²+(x-y)²]
=(x-y)(x²+2xy+y²+x²-2xy+y²)
=(x-y)(2x²+2y²)
=2(x-y)(x²+y²)
解:原式=(x-y)[(x＋y)^2-xy＋(x-y)^2＋xy]=(x-y)(2x^2＋2y^2)=2(x-y)(x^2＋y^2)
解
原式
=(x-y)[(x+y)²-xy+(x-y)²+xy]
=(x-y)[(x+y)²+(x-y)²]
=(x-y)(x²+2xy+y²+x²-2xy+y²)
=(x-y)(2x²+2y²)
=2(x-y)(x²+y²)为什么...
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解
原式
=(x-y)[(x+y)²-xy+(x-y)²+xy]
=(x-y)[(x+y)²+(x-y)²]
=(x-y)(x²+2xy+y²+x²-2xy+y²)
=(x-y)(2x²+2y²)
=2(x-y)(x²+y²)
收起
(-x-y)(x^2+xy+y^2)
化简x^-y^/x^-2xy+y^
2*(x-y)²(y-x)(xy)
（x^2+xy/x-y)/（xy/x-y)计算
X-Y/2X+2Y XY/X+Y²
因式分解：x×x-xy-2y×y-x-y
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|x|/x+y/|y|+xy/|xy|=
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因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y)
(x-y)[(x+y)^2-xy]+(x-y)[(x-y)^2+xy]
x根号x+x根号y/xy-y^2)-（x+根号xy+y/x根号x-y根号）y
xy(x-y)-x(x-y)²
.(x+y-2)(x+y-2xy)+(xy-1)^2
(x^2-xy)y÷y-x/xy怎么做?
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[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y
[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y