若x>0,y>0,切x-√(xy)-2y=0,求2x-√(xy)/(y+2)√(xy)的值
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若x>0,y>0,切x-√(xy)-2y=0,求2x-√(xy)/(y+2)√(xy)的值
若x>0,y>0,切x-√(xy)-2y=0,求2x-√(xy)/(y+2)√(xy)的值
若x>0,y>0,切x-√(xy)-2y=0,求2x-√(xy)/(y+2)√(xy)的值
分解因式:得x=4y
若x>0,y>0,且√x(√x+√y)=3√y(√x+5√y),求(2x+2√xy+3y)/(x-√xy+y)的值.若x>0,y>0,且√x(√x+√y)=3√y(√x+5√y),求(2x+2√xy+3y)/(x-√xy+y)的值.
若xy>0,则(x+y)xy一定
若x>0,y>0,切x-√(xy)-2y=0,求2x-√(xy)/(y+2)√(xy)的值
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