2x-1/x+1+3x+1/x+2-5x-11/x-1=
1个回答
(2x-1)(x+2)(x-1)+(3x+1)(x+1)(x-1)-(5x-11)(x+1)(x+2)
=2x²-31x-21
相关问题
1/x-3-2=4-x/3xx/2x-5+5/5-2x=11/x-1=x-2/x+1-1
2/3x( )=1.5x( )=5/11x( )=1
1.2(x+1)>3x-4 2.4-x-2(x+1)>11 3.2x+6≤5x
解下列方程3=11-X;3-X=7;2X+3=X-1;2X-1=-X+5;11/9X+2/7=2/9X-5/7;1/2X
1/1x2+1/2x3+1/3x4+1/4x5+…+1/10x11
[1/(x-1)(x+2)]+[1/(x+2)(x+5)]+[1/(x+5)(x+8)]+[1/(x+8)(x+11)]
2-(1-x)=-2,11x+1=5(2X+1),4x-3(20-x)=3,5(X+8)-5=0,2(3-X)=9,-3
1/2X5 + 1/3X5 + 1/8X11 + .+1/20X23 =
x1+x2+x3=11 x1>=2 x2
(1/2x3x4)+(1/3x4x5)+.+(1/10x11x12)