计算(x+y/x-y + 4xy/y2-x2)(x2-9y2)/（x2+2xy-3y2）
来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/05 18:46:43
计算(x+y/x-y+4xy/y2-x2)(x2-9y2)/（x2+2xy-3y2）计算(x+y/x-y+4xy/y2-x2)(x2-9y2)/（x2+2xy-3y2）计算(x+y/x-y+4xy/y
计算(x+y/x-y + 4xy/y2-x2)(x2-9y2)/（x2+2xy-3y2）
计算(x+y/x-y + 4xy/y2-x2)(x2-9y2)/（x2+2xy-3y2）
计算(x+y/x-y + 4xy/y2-x2)(x2-9y2)/（x2+2xy-3y2）
(x+y/x-y + 4xy/y2-x2)(x2-9y2)/（x2+2xy-3y2）
=[(x+y/x-y -4xy/(x+y)(x-y)](x+3y)(x-3y)/(x+3y)(x-y).(平方差公式、十字相乘法）
=[（x-y）的平方/(x+y)(x-y)](x+3y)(x-3y)/(x+3y)(x-y).(通分,完全平方公式）
=（x-3y)/(x+y).（约分,化简）
计算(x+y/x-y + 4xy/y2-x2)(x2-9y2)/（x2+2xy-3y2）
x2-4y2-3xy+y+x
(x-y)(x2+xy+y2)
(x+y)(x2-xy+y2)
(2xy/x2-y2)+(x+y/x)-(y/y-x)计算
计算3xy/x2次方-4y2次方÷xy/x+2y
计算 3x【xy-2x(y-1/3x)】+3y(x2次-y2次)
(x-y)(x2+xy+y2)-xy(y-x)
计算下面式子{x-y+[(4xy)/(x-y)]}{x-y-[(4xy)/(x-y)]}
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)]
计算：（x-y+4xy/x-y)(x+y-4xy/x+y)
(x-y+(4xy/x-y))(x+y-(4xy/x+y)) 分式计算
计算:2xy/(x+y)².(x+y)/4y
计算 （xy-y2分之x根号x+x根号y）-（x根号x-y根号y分之x+根号xy+y）
已知X>Y,x2+Y2=4xy.求(X+Y)/(X-Y)=?
因式分解x2+y2-xy-x-y+1
若x-y/x+y=2,则x2+2xy+y2/4xy=多少