若y=√3x-2+√2-3x+2,求3x+y的平方根.

若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值 若x>0,y>0,且√x(√x+√y)=3√y(√x+5√y),求2x+2√x*√y+3y/x-√x*√y+y 若√(2-x)+√(x-2)-y=3,求y^x的算术平方根. 已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) ³√x+y=3,√x-y=2 求x,y的平方根 y=(2x^2-3x+4)/√ x 求y' y=(2x^2-3x+4)除以根号X 求 y' |x-2y|+√3x-4y =0求x y值 求值域 y=(x²-2)/(x²+x+1); y=2x-3+√(13-4x); y=(3x+2)/(x-1) 求值域 y=(x²-1)/(x²+x+1); y=2x-3+√(13-4x); y=(3x+2)/(x-1) 若x>o,y>o,且根号x(根号x+根号y)=3根号y(根号x+5根号y)求x+根号xy分之2x-根号xy-5y式子是√x（√x+√y）=3√y（√x+5√y），求x+√xy分之2x-√xy-5y 求y=√[(x-1)(x-2)]/[(x-3)(x-4)]的导数 y=x^5+√x+1/x^3 ,求导数结果是y’=2x-5/2x^-7/2-3x^-4,对y求导数 (x-y)/(x+y)=3求( 3x-2y-1)/(x+y-5) 已知|x|=2,|y|=3,|x+y|=-(x+y)求x-y y=3(x-y),x=2(x-y)求x,y的值 已知x-y=3,求[（x+y)(x-y)-(x-y)^2+2y(x-y)]除以的值 若实数x,y满足x的平方+2√3x+根号（x+y+1）+3=0,求代数式(1/x-y+1/x+y)÷y/（x²+y²）重点是代入部分啊 已知3x =2y 求x/x+y+y/x-y-y²/x²-y²