计算:(2xy-x方)÷xy分之x-2y
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计算:(2xy-x方)÷xy分之x-2y
计算:(xy分之x+y)方-x方y方分之x方-y方
2道分式计算1、 x-1分之x方-x-12、 x分之x方-y方÷(x-x分之2xy-y方)要过程谢谢1、 (x-1分之x方)-x-12、 x分之x方-y方÷(x-x分之2xy-y方)
计算 x方/x-y+y方/x-y-2x方y-2xy方/x方-2xy+y方 答案为x+y
计算:(x|x^2-xy)^﹣3×(﹣x^2-2xy+y^2)﹣2÷(x^2|xy-y^2)^2=(x方-xy分之x)的负3次方×(负的xy分之x方-2xy+y方)的负2次方÷(xy-y方分之x方)的2次方=
2x+2y分之3y+x方+xy分之2xy
计算:(2x方+xy-4x-2y)÷(2-x)计算:(2x方+xy-4x-2y)÷(2-x)
计算x的平方+2xy+y的平方分之x的平方-4y的评方+x的平方+xy分之x+2y
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(x-y)方分之一和x方-3xy+2y方分之2,通分
已知y分之x=3 求xy分之x方减y方除以xy-y方分之2(x-y)方的值
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计算(xy-y^2)÷x-y/xy
化简求值,若X方-2XY+Y方+1XY-11=0,求X方+6XY+9Y方分之X方-25Y方*5X-25Y分之X+3Y的值
因式分解:x方y+2xy+y
化简-(x方-2xy-y方)+(5x方-2xy-3y方)
计算:2x+2y分之3y + x²+xy分之2xy
(x^2+xy/x-y)/(xy/x-y)计算