原式=x(x+y)/(x-y)*(x-y)/xy
=(x+y)/y
計算 x-y分之x²+xy÷x-y分之xy
計算 x-y分之x²+xy÷x-y分之xy
數(shù)學(xué)人氣:656 ℃時間:2020-03-21 10:14:21
優(yōu)質(zhì)解答
我來回答
類似推薦
- 計算:1、(xy分之x²-y²)×(x-y分之x)-(y分之x);
- xy分之x²-y分之x算出來多少
- 計算:(xy-x²)乘 x-y分之xy
- 計算xy-y²分之x²+2xy+y²÷x²-2xy+y²分之xy+y².
- 計算:5y分之x的平方-xy·x²-y²分之10y²
- 已知實數(shù)x,y滿足2x+3y≤14,2x+y≤9,x≥0,y≥0,S=3x+ay,若S取得最大值時的最優(yōu)解有無窮多個,則實數(shù)a=?
- 請問這種成分還屬301不銹鋼嗎?(C-0.1003;Si-0.2467;Mn-2.2387;p-0.358;S-0.169;Cr-14.6342;Ni-6.0215)
- X=2*3*5*7*11*13*17*19*23*29*.N(N為質(zhì)數(shù)),求證:X+1為質(zhì)數(shù)
- 若√2007n是個非零整數(shù),則最小整數(shù)n是?
- Either I or he ( )soccer with Tom 四個選項 play are plays is
- .the music festival was great!Many famous people (attended) it.
- 如果(M)表示m的全部因數(shù)的和,如(4)=1+2+4=7,則(18)-(21)=()