若(x-5)²=169,(y-1)³=-0.125,求根号x-根号2xy-立方根2y-x
若(x-5)²=169,(y-1)³=-0.125,求根号x-根号2xy-立方根2y-x
若(x-3)平方=169,(y-1)立方=—0.125,求根号X—根号2XY-立方根16y-x的值
已知(4X-2Y-1)²+根号xy-2=0,求4x²y²+xy²的值
若y=根号x-2+根号2-x-4/27,求xy的立方根.
若y=(根号下x-2)+(根号下2-x)-27分之4,求xy的立方根.
已知x,y满足x²+y²-4x-6y+13=0,求(-y/x³)³÷(-1/xy
已知x,y为正数,且根号x(根号x+根号y)=3根号y(根号x+5根号y),求:(2x+根号xy+3y)/(x+根号xy
(X+9)的平方=169,(Y-1)的立方=-0.125,求根号X-根号8XY-立方根2Y-7X的直
1已知X-Y=XY=3求(X+Y)²及X³-Y³的值
已知x/y=3,求x²+2xy-3y²/x²-xy+y³的值
已知(x²-1)²+|2y³-686|+根号z+4=0 求z(x+y)的值
若x、y满足y=根号1-2x + 根号(x-1)² - 根号2x-1,求x+y的平方根