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)
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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)
![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)](/uploads/image/z/4562479-55-9.jpg?t=%E8%AE%A1%E7%AE%97+%EF%BC%88xy-y2%E5%88%86%E4%B9%8Bx%E6%A0%B9%E5%8F%B7x%2Bx%E6%A0%B9%E5%8F%B7y%EF%BC%89-%EF%BC%88x%E6%A0%B9%E5%8F%B7x-y%E6%A0%B9%E5%8F%B7y%E5%88%86%E4%B9%8Bx%2B%E6%A0%B9%E5%8F%B7xy%2By%EF%BC%89)
你的题目不是很明白哦,所谓的分之是到哪那啊?请把分子、分母都标上括号,要不可能性太多了
再问: ((x√x+x√y)/xy-y2)-(x+√xy+y/x√x-y√y) “/”前面的是分子 后面的是分母
再答: 因为 后一项 (x+√xy+y/x√x-y√y)=(x+√xy+y)/((√x-√y)(x+√xy+y))=1/(√x-√y)=(√x+√y)/(x-y) 所以原式=(x√x+x√y)/(y(x-y))-(√x+√y)/(x-y) =(x√x+x√y-y(√x+√y))/(y(x-y)) =(√x+√y)/y
再问: ((x√x+x√y)/xy-y2)-(x+√xy+y/x√x-y√y) “/”前面的是分子 后面的是分母
再答: 因为 后一项 (x+√xy+y/x√x-y√y)=(x+√xy+y)/((√x-√y)(x+√xy+y))=1/(√x-√y)=(√x+√y)/(x-y) 所以原式=(x√x+x√y)/(y(x-y))-(√x+√y)/(x-y) =(x√x+x√y-y(√x+√y))/(y(x-y)) =(√x+√y)/y
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)
x根号x+x根号y/xy-y^2)-(x+根号xy+y/x根号x-y根号)y
计算:根号下X(X+Y)除根号下X+Y分之XY方
化简 x+根号xy+y分之x根号x-y根号y
根号x减根号y分之(x减y)加(根号x加根号y)分之x加y加2根号xy
化简:(根号x+根号y)分之(x+y) +【根号xy乘以(根号x+根号y)】 分之2xy
已知y=根号1-x+根号x-1+3,求根号x+根号y分之x+2根号xy+y+根号x-根号y分之一的值
①{(x+y)/(根号x+根号y)}+{2xy/根号xy(根号x+根号y)}
y根号y分之2x -x根号x分之3 -(y分之2根号2xy的三次方 -根号27x的三次方)
根号xy 除以 2倍根号x分之y^2
3根号xy分之2根号x的平方y
化简:[(x×根号x+x×根号y)/(xy-y²)]-[(x+根号下xy+y)/(x×根号x-y×根号y)]