作业帮(x-y+4xy/x+y)(x+y-4xy/x+y)等于的多少? 谢谢!
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(x-y+4xy/x+y)(x+y-4xy/x+y)等于的多少? 谢谢!
(x-y+4xy/x+y)(x+y-4xy/x+y)等于的多少? 谢谢!
(x-y+4xy/x+y)(x+y-4xy/x+y)等于的多少? 谢谢!
原式=[(x-y)²+4xy]/(x-y)*[(x+y)²-4xy]/(x+y)
=(x+y)²/(x-y)*(x-y)²/(x+y)
=(x+y)(x-y)
=x²-y²
[(x+y)+(4xy/x-y)][(x+y)-(4xy/x-y)]和
(a+b)(a-b) 一样
计算下面式子{x-y+[(4xy)/(x-y)]}{x-y-[(4xy)/(x-y)]}
（x-y+4xy/x-y）(x+y-4xy/x-y)
(x-y+4xy/x+y)(x+y-4xy/x+y)等于的多少? 谢谢!
化简计算:[x-y+4xy/(x-y)] * [x+y-4xy/(x+y)]
计算:[x-y+4xy/(x-y)] * [x+y-4xy/(x+y)]
化简[x-y+4xy/(x-y)][x+y-4xy/(x-y)]
计算：（x-y+4xy/x-y)(x+y-4xy/x+y)
(x一y+4xy/x-y)(x+y-4xy/x+y)
化简:(x+y-4xy/x+y)*(x-y-4xy/x-y)=
(x-y+(4xy/x-y))(x+y-(4xy/x+y)) 分式计算
因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y)
计算:2xy/(x+y)².(x+y)/4y
(x+y)(x+y+2xy)+(xy+1)(xy-1)(x+y)(x-y)+4(y-1)
2x(x-y)+4xy(y-x) 因式分解2x(x-y)+4xy(y-x) 因式分解
x²/xy-x/y 3x/4x+y - x-2y/4x+y (1-y/y+x)÷x/y²-x²
(x^-4y^)/(x^+2xy+y^)/(x+2y)/(2x^+2xy)
因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6
已知x*x-4xy+4y*y=0 求[2x(x+y)-y(x+y)]/(4x*x-4xy+y*y)的值?