设√x(√x-√y)=√xy+3y,求2x+3√xy-y/3x-y的值.
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![设√x(√x-√y)=√xy+3y,求2x+3√xy-y/3x-y的值.](/uploads/image/z/438463-55-3.jpg?t=%E8%AE%BE%E2%88%9Ax%28%E2%88%9Ax-%E2%88%9Ay%29%3D%E2%88%9Axy%2B3y%2C%E6%B1%822x%2B3%E2%88%9Axy-y%2F3x-y%E7%9A%84%E5%80%BC.)
设√x(√x-√y)=√xy+3y,求2x+3√xy-y/3x-y的值.
设√x(√x-√y)=√xy+3y,求2x+3√xy-y/3x-y的值.
设√x(√x-√y)=√xy+3y,求2x+3√xy-y/3x-y的值.
√x(√x-√y)=√xy+3y
则x-√xy=√xy+3y
则x-2√xy-3y=0
(√x+√y)(√x-3√y)=0
所以√x-3√y=0
所以)√x=3√y
所以x=9y
2x+3√xy-y/3x-y=(18y+9y-y)/(27y-y)=26y/26y=1