2x+3=x-2 5(2-x)=-(2x-7) x/2-2x-4/3=1+5x+12/6
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2x+3=x-2 5(2-x)=-(2x-7) x/2-2x-4/3=1+5x+12/6
2x+3=x-2 5(2-x)=-(2x-7) x/2-2x-4/3=1+5x+12/6
2x+3=x-2 5(2-x)=-(2x-7) x/2-2x-4/3=1+5x+12/6
2X+3=X-2 X=-5
5(2-X)=-(2X-7)
10-5X=-2X+7
3X=3
X=1
X/2-2X-4/3=1+5X+12/6
X-4X-8/3=2+10X+12/3
13X=-26/3
X=-2/3
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
x(x-2)-2x(x+1)-3x(x-5) 其中x=负½
x-2x+3x-4x+5x.+99x-100x=25求解
2x+3x+4x+5x+x+6x+7x=100
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
x^5-2x^3+x=?
写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4
(X+1)X(X+2)X(X+3)=504
一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X
5x/(x-2)-2=3(x-2)/x
8x+3(x-2)=5x+(x-3)
(X-5)(X+3)+(X-2)(X+4)=26
x(x+2)(x+3)(x+5)=7