计算:(根号下x+xy-根号下xy)(根号下y+y²+y)(x>0,y>0)
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计算:(根号下x+xy-根号下xy)(根号下y+y²+y)(x>0,y>0)计算:(根号下x+xy-根号下xy)(根号下y+y²+y)(x>0,y>0)计算:(根号下x+xy-根号
计算:(根号下x+xy-根号下xy)(根号下y+y²+y)(x>0,y>0)
计算:(根号下x+xy-根号下xy)(根号下y+y²+y)(x>0,y>0)
计算:(根号下x+xy-根号下xy)(根号下y+y²+y)(x>0,y>0)
根号下x+xy——是(√x)+xy,还是√(x+xy)?
还有其他的呢,适当地加上括号,别人好理解一些!
计算:根号下X(X+Y)除根号下X+Y分之XY方
计算(x根号下y-y的根号下x)/根号下xy
计算:(根号下x+xy-根号下xy)(根号下y+y²+y)(x>0,y>0);
计算:(根号下x+xy-根号下xy)(根号下y+y²+y)(x>0,y>0)
计算 (根号下x+xy-根号下xy)(根号下y+y的平方+y)(x>0 y>0) 快啊.
(x*根号下x + x*根号下y ) / (xy-y^2) — (x + 根号下xy + y) /(x*根号下x — y*根号下y)
化简:(根号7+根号5)/(根号7-根号5).化简:(根号7+根号5)/(根号7-根号5).计算:3/5根号下xy^3除以[(-4/15)根号下(y/x)]乘以[(-5/6)根号下(x^3 y)].
化简(x+2根号下xy+y)除以(根号x+根号y)
如果 根号下x-根号下y等于根号下3+根号下2 根号下xy等于根号下6-根号下2 则 x+y=?
若x>0,y>0,且根号下x(根号下x+根号下y)=3根号下y(根号下x+5根号下y),求(2x+2根号下若x>0,y>0,且根号下x(根号下x+根号下y)=3根号下y(根号下x+5根号下y),求(2x+2根号下xy+3y)/(x-根号下xy+y
化简:[(x×根号x+x×根号y)/(xy-y²)]-[(x+根号下xy+y)/(x×根号x-y×根号y)]
(x+y)/(根号下x+根号下y)+2xy/(x根号下y+y根号下x)=______.(x+y)/(根号下x+根号下y)+2xy/(x根号下y+y根号下x)=______.
根号下(x^2-2xy+y^2/xy)化简 x>y>0
计算:( 根号xy-xy/x+根号xy)÷根号xy-y/x-y=
lim(xy)/根号下(xy+1)-1=?注(x,y)--(0,0)
lim (x,y)->(0,0) xy/[根号下(xy+1)]-1的值为
lim (x,y)->(0,0) xy/[根号下(xy+1)]-1的值为
lim(x→0,y→0)3-根号下(xy+9)/xy=?