2xy/(x^2-y2)+x/(x+y)怎么化简

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2xy/(x^2-y2)+x/(x+y)怎么化简

2xy/(x^2-y2)+x/(x+y)怎么化简
2xy/(x^2-y2)+x/(x+y)怎么化简

2xy/(x^2-y2)+x/(x+y)怎么化简
原式=2xy／(X^2-y^2)+x(x-y)／(x^2-y^2)
=(2xy+x^2-xy)／(x^2-y^2)
=x(x+y)／(x-y)(x+y)
=x／(x-y)

xy(xy
2xy/(x＋y)(x－y)＋x(x－y)/(x＋y)(x－y)＝x/x＋y。分子计算后和分母约分

原式=【2xy+x(x-y)】/(x平方-y平方）=【x平方+xy]/(x平方-y平方）=x/(x-y)

因式分解x^3y-2x^2y2+xy^3 已知x.y满足X2-y2=2xy.则x-y/x+y=?x. 计算(x+y/x-y + 4xy/y2-x2)(x2-9y2)/（x2+2xy-3y2） (x-y)(x2+xy+y2) (x+y)(x2-xy+y2) [2/xy/(1/x+1/y)2+(x2+y2)/(x2+2xy+y2)]*2x/(x-y) 整数x,y满足x2-y2=2xy,求x-y/x+y的值 (2xy/x2-y2)+(x+y/x)-(y/y-x)计算 正整数x,y满足x2-y2=2xy,求x-y/x+y的值 若x-y/x+y=2,则x2+2xy+y2/4xy=多少 x2-2xy-3y2=0,其中x,y均不为零,求（y-x）/x2-xy/2x-y-y2/xy-x 4x2-y2/x2-2xy+y2 +(2x-y)/2x2-2xy 代数式x-y/x/(x-2xy-y2/x)怎么算 因式分解x2-4xy+4y2+x-2y-2 x2-4xy+4y2-x+2y-2因式分解 x2+2xy-3y2+3x+y+2 因式分解 xy2-2xy-3x-y2-2y-1因式分解. 因式分解x2+2+y2-3x-2xy+3y