2xy/(x*x+y*y) 和 x/x*x-y*y(x平方就用x*x,y的平方用y*y)怎么通分 请写出过程
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2xy/(x*x+y*y)和x/x*x-y*y(x平方就用x*x,y的平方用y*y)怎么通分请写出过程2xy/(x*x+y*y)和x/x*x-y*y(x平方就用x*x,y的平方用y*y)怎么通分请写出
2xy/(x*x+y*y) 和 x/x*x-y*y(x平方就用x*x,y的平方用y*y)怎么通分 请写出过程
2xy/(x*x+y*y) 和 x/x*x-y*y(x平方就用x*x,y的平方用y*y)怎么通分 请写出过程
2xy/(x*x+y*y) 和 x/x*x-y*y(x平方就用x*x,y的平方用y*y)怎么通分 请写出过程
2xy(x²-y²)/(x²+y²)(x²-y²)
=(2x³y-2xy³)/(x²+y²)(x²-y²)
x(x²+y²)/(x²+y²)(x²-y²)
=(x³+xy²)/(x²+y²)(x²-y²)
x根号x+x根号y/xy-y^2)-(x+根号xy+y/x根号x-y根号)y
x-y xy——和——2x+2y(x+y)
(xy-x²)÷(x²-2xy+y²/xy)×(x-y/x²)
x-y/x²÷x²-2xy+y²/xy*(xy-x²)
(-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
用ab表示x,y的平方和,X和y的积的平方,y/x+x/y(x*x+2xy+y*y)=a(x*x-2xy+y*y)=b
(x-y/x+y)^2÷(y-x/x^2+2xy+y^2)^2
(x+y)/x /(x-(2xy-y^2)/x) 因式分解
X-Y/2X+2Y XY/X+Y²
因式分解:x×x-xy-2y×y-x-y
计算x²-x/x²×x/1-x和x²-4y²/x²+2xy+y²÷x+2y/x²+xy
xy(x-y)-x(x-y)²
|x|/x+y/|y|+xy/|xy|=
因式分解-x^3+2x^2y-xy^2和16(x-y)^2-9(x+y)^2和(x+2)(x+4)+x^2-4
代数 x^-y^/ x^-(y-z)^ 除以 x^+2xy+y^/(x-y)^-z^ 乘 x^+xy-xz/x^-xy