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)]
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/07/07 11:48:11
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×根号x+x×根号y)/(xy-y²)]-[(x+根号下xy+y)/(x×根号x-y×根号y)]
=(x√x+x√y)/(xy-y^2)-[x+√(xy)+y]/(x√x-y√y)
=[x(√x+√y)/[y(√x-√y)(√x+√y)]-[x+√(xy)+y]/{(√x-√y)[x+√(xy)+y]}
=x/[y(√x-√y)]-1/(√x-√y)
=(x-y)/[y(√x-√y)]
=(√x-√y)(√x+√y)/[y(√x-√y)]
=(√x+√y)/y
=(x√x+x√y)/(xy-y^2)-[x+√(xy)+y]/(x√x-y√y)
=[x(√x+√y)/[y(√x-√y)(√x+√y)]-[x+√(xy)+y]/{(√x-√y)[x+√(xy)+y]}
=x/[y(√x-√y)]-1/(√x-√y)
=(x-y)/[y(√x-√y)]
=(√x-√y)(√x+√y)/[y(√x-√y)]
=(√x+√y)/y
x根号x+x根号y/xy-y^2)-(x+根号xy+y/x根号x-y根号)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)]
化简(y根号x+x根号y)/(xy-y²)-(x+根号xy+y)/(x根号x-y根号y).
①{(x+y)/(根号x+根号y)}+{2xy/根号xy(根号x+根号y)}
计算 (xy-y2分之x根号x+x根号y)-(x根号x-y根号y分之x+根号xy+y)
计算:根号下X(X+Y)除根号下X+Y分之XY方
跟号打不出来,所以用汉字,大家费点劲哈 ((根号x/根号x+根号y)-(根号y/根号y-根号x)-(2根号xy/x-y)
化简:(根号xy)-(根号x/y)+(根号y/x)+(根号x/y+y/x+2)(x、y>0)
已知y=根号下(x-4)+根号下(4-x)+3,求代数式(x-y+4xy/x-y)(x+y-4xy/x+y)?
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)
已知x,y为正数,且根号x(根号x+根号y)=3根号y(根号x+5根号y),求:(2x+根号xy+3y)/(x+根号xy
化简:(根号x+根号y)分之(x+y) +【根号xy乘以(根号x+根号y)】 分之2xy