数学分式化简(xy-y²)分之(y×根号x +x×根号y ) -(x×根号下x-y×根号下y)分之(x+根号下xy+y)
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数学分式化简(xy-y²)分之(y×根号x +x×根号y ) -(x×根号下x-y×根号下y)分之(x+根号下xy+y)
数学分式化简
(xy-y²)分之(y×根号x +x×根号y ) -(x×根号下x-y×根号下y)分之(x+根号下xy+y)
数学分式化简(xy-y²)分之(y×根号x +x×根号y ) -(x×根号下x-y×根号下y)分之(x+根号下xy+y)
(xy-y²)分之(y×根号x +x×根号y ) -(x×根号下x-y×根号下y)分之(x+根号下xy+y)
=(y√x+x√y)/(xy-y²)-(x+√xy+y)/(x√x-y√y)
=√(xy)(√x+√y)/y(x-y)-(x+√(xy)+y)/(√x-√y)(x+√(xy)+y)
=√x/√y(√x-√y)-1/(√x-√y)
=(√x-√y)/√y(√x-√y)
=1/√y
=√y/y
能不能拍下来啊,你这样的题目很让人产生歧义,没办法帮你呢
真心没看懂你说的是什么。。。
(y√x+x√y)/(xy-y²)-(x+√xy+y)/(x√x-y√y)
==√(xy)(√x+√y)/y(x-y)-(x+√(xy)+y)/(√x-√y)(x+√(xy)+y)
=√x/√y(√x-√y)-1/(√x-√y)
=(√x-√y)/√y(√x-√y)
=1/√y
=√y/y那第三行√(xy)(√x+√y)/y(x-y)怎么...
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(y√x+x√y)/(xy-y²)-(x+√xy+y)/(x√x-y√y)
==√(xy)(√x+√y)/y(x-y)-(x+√(xy)+y)/(√x-√y)(x+√(xy)+y)
=√x/√y(√x-√y)-1/(√x-√y)
=(√x-√y)/√y(√x-√y)
=1/√y
=√y/y
收起
我快晕了,晕了