化简根号下x^2+根号下(x-2)^2-根号下x^2-6x+9(2
化简根号下x^2+根号下(x-2)^2-根号下x^2-6x+9(2
计算5根号下8x-根号下50x-(6根号下x/2-根号下9/2x
若根号下(x-2)(3-x)=根号下x-2乘根号下3-x化简根号下x²-4x+4+根号下9-6x+x²
计算:(2/3x根号下9x+6x根号下y/x)+(y根号下x/y-x的平方根号下1/x)=
(根号下5x-6)-(根号下2x-3)=根号下3x-5
根号下2x+4 +根号下3x-5
二次根式乘除化简根号下x^2-4x+4 减去 根号下x^2+6x+9
(x+y)/(根号下x+根号下y)+2xy/(x根号下y+y根号下x)=______.
(x-根号下2)=根号下5×x(2-根号下2×x)
5根号下8x-根号下50x-(6根号下x/2-根号下9/2x) 计算
计算:根号下{(x^2-3x+2)/(x^2-6x+9)} *{(x-3)/根号下(2-x)}+根号下(-x)
log2[-x+根号下(x^2+1)]