1.√x+√y=√5+√3,√xy=√15-√3,求x+y.(写全过程) 计算:2.√12-(2-√3)÷√3
1.√x+√y=√5+√3,√xy=√15-√3,求x+y.(写全过程) 计算:2.√12-(2-√3)÷√3
√x(√x+2√y)=√y(6√x+5√y,求x-3√xy+2y/x+√xy-6y
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、y为整数,√x(√x+√y)=3√y(√x+5√y),试求2x+(√xy)+3y除以x+(√xy)+y
1.若x-2√xy-3y=0 x>0求2x+y+√xy除以y-x-√xy
已知x,y为正数,且√x(√x+√y)=3√y(√x+5√y),求(2x+√xy+3y)/(x+√xy-y)
当x>0,y>0且√x(√x+√y)=3√y(√x+5√y),求2x+(√xy)+3y/x+(√xy)-y的值
设√x(√x-√y)=√xy+3y,求2x+3√xy-y/3x-y的值.
已知x>0,y>0,且x-2√xy-15y=0,求(2x+√xy+3y)÷(x+√xy-y)的值
已知2X-3√xy-2y=0(x>0)求2x²+xy-9y²分之x²+4xy-16y
1.已知x>0,y>0,且x+3y=4√xy,求√xy+y分之x+√xy
已知x+y=5,xy=3,计算√(y÷x)+√(x÷y)的值