已知x-3√(xy)-4y=0则(2x+3√(xy)-2y)/(3x-√(xy)+y)=?答案是14/15 ∵x-3√(xy)-4y=0∴(√x-2√y)(√x+√y)=0化错的吧``
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/01 06:01:07
![已知x-3√(xy)-4y=0则(2x+3√(xy)-2y)/(3x-√(xy)+y)=?答案是14/15 ∵x-3√(xy)-4y=0∴(√x-2√y)(√x+√y)=0化错的吧``](/uploads/image/z/13617114-42-4.jpg?t=%E5%B7%B2%E7%9F%A5x-3%E2%88%9A%EF%BC%88xy%EF%BC%89-4y%3D0%E5%88%99%EF%BC%882x%2B3%E2%88%9A%28xy%29-2y%29%2F%283x-%E2%88%9A%28xy%29%2By%29%3D%3F%E7%AD%94%E6%A1%88%E6%98%AF14%2F15+%E2%88%B5x-3%E2%88%9A%EF%BC%88xy%EF%BC%89-4y%3D0%E2%88%B4%EF%BC%88%E2%88%9Ax-2%E2%88%9Ay%EF%BC%89%28%E2%88%9Ax%2B%E2%88%9Ay%29%3D0%E5%8C%96%E9%94%99%E7%9A%84%E5%90%A7%60%60)
已知x-3√(xy)-4y=0则(2x+3√(xy)-2y)/(3x-√(xy)+y)=?答案是14/15 ∵x-3√(xy)-4y=0∴(√x-2√y)(√x+√y)=0化错的吧``
已知x-3√(xy)-4y=0
则(2x+3√(xy)-2y)/(3x-√(xy)+y)=?
答案是14/15
∵x-3√(xy)-4y=0
∴(√x-2√y)(√x+√y)=0
化错的吧``
已知x-3√(xy)-4y=0则(2x+3√(xy)-2y)/(3x-√(xy)+y)=?答案是14/15 ∵x-3√(xy)-4y=0∴(√x-2√y)(√x+√y)=0化错的吧``
∵x-3√(xy)-4y=0
∴(√x-4√y)(√x+√y)=0
∵x,y不能都等于0
∴√x=4√y
∴x=16y
∴(2x+3√(xy)-2y)/(3x-√(xy)+y)
=(32y+12y-2y)/(48y-4y+y)
=14/15
sorry!
写得清楚点嘛