若三次根号x-2=2,16y²-81=0.求xy的值
若(x-3)^2=169,(y-1)的三次方=-0.125,求根号x-根号2xy-三次方根号16y-x的值
已知根号x+23=5 (Y-10)三次方=-0.125 求根号x-根号2xy-三次根号2y-x的值
若三次根号3Y-1=三次根号2x-1,且xy不等于0,求y分之x的值
已知(x+9)²=169,(y-1)的三次方=-0.125,求根号x-根号8xy-三次根号2y-7x的值 (求
已知(x-15)^2=169,(y-1)^3=-0.125,求根号x-根号2xy+三次根号2y-x的值.
已知xy²=-2,求-xy(x²y的五次方-xy的三次方-y)的值
已知(x+9)²=169,(y-1)的三次方=-0.125,求根号x-根号8xy-三次根号2y-7x的值
已知x-y= -2,xy=负四分之一,求-2x²y²+xy的三次方+x的三次方Y的值
若X>0,y>0,且x-根号下xy-2y=0,求(2x-根号下xy)/y+2根号下xy的值
若x>0,y>0,且x-根号下xy-2y=0,求【2x-根号下xy】÷【y+2根号下xy】的值
若x>0,y>0,且x-根号xy-2y=0,求y+2倍根号xy分之2x-根号xy的值
已知xy=1,x+y=3,求代数式x三次方y+2x²y²+xy三次方的值