x>0 y>0 化简4x^(√2/2)*3x^-(√2/2) * (-y√3)^-(√3/3)
|x-2y|+√3x-4y =0求x y值
|2x+y+1|+√2y+3x=0则x.y=
已知x^2+y^2-4x-2y+5=0,求【2/3x√9x+y^2 √[x/y^2]】的值
已知4x²+y²-4x-6y+10=0,求(2x/3*√(9x)+y²√(x/y³
已知4x²+y²-4x-6y+10=0求(2/3x(√9x)+(y²√x/y³)
已知4x²+y²-4x-6y+10=0,求[(2/3)x√(9x)+y²√(x/y
已知4x²+y²-4x-6y+10=0,求(2/3√9x+y²√x/y³)-(x
化简1) (-2x^ y^)(3x^ y^)(-4x^ y^)2) (6√x)\(3√x√x^5)3)已知函数f(x)的
计算:(2/3x√9x+6x√y/x)+(y√x/y-√1/x)
化简:(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方
已知x,y满足条件 {4x+2y-7≥0,x-2y+2≥0,3x-y-4≤0} 试求Z=√(x^2+y^2+2X+4Y)
2x²+1/2y²-2x-3y+5=0,求(2x√9x-y²√x/y³)-(√1