Question

已知x-3√（xy）-4y=0则（2x+3√(xy)-2y)/(3x-√(xy)+y)=?答案是14/15 ∵x-3√（

Answer 1

∵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!