化简根号(x+y)^3
已知x=2y,化简根号y/(根号x-根号y)-根号y/(根号x+根号y)
化简求值:根号x^-2xy+y^2 + x^2 -6xy+9y^2/x-3y,其中x=根号3,y=根号5
1.已知y根号(x-3)/y=-根号(x-3)乘以y,化简根号(x的平方-8x+16)+根号(y-1)的平方-根号(x-
化简:((根号x-根号y)^3+2x根号x+y根号y)/(x根号x+y根号y)+(3根号xy-3y)/(x-y)
代数式求值.已知x=2,y=根号3,求 (根号x-根号y)/(根号x+根号y)+(根号x+根号y)/(根号x-根号y)
化简已知y=2根号x-1+3 根号1-x +1/2,求根号xy/二分之一根号2/y
设x小于0,y小于0,则x*根号y/x-1/y*根号x*y的立方-根号x的立方*y化简为:
根号下x²+(y+3)²+根号下x²+(y-3)-10 怎么化简这个方程?
化简方程根号下x^2+(y+3)^2+根号下x^2+(y-3)^2=4
化简方程根号下x^2+(y+3)^2+根号下x^+(y-1)^2=10
化简方程下根号x^2+(y+3)^2+根号x^+(y-1)^2=10
化简求值:(2x/(x^2-y^2))-(1/(x-y)),其中x=(3根号5)-1,y=(-2根号5)+1