x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=?
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/21 21:49:16
x-4/x-5-x-5/x-6=x-7/x-8-x-8/x-9求x=?x-4/x-5-x-5/x-6=x-7/x-8-x-8/x-9求x=?x-4/x-5-x-5/x-6=x-7/x-8-x-8/x-
x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=?
x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=?
x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=?
(X-4)/(X-5)-(X-5)/(X-6)=(X-7)/(X-8)-(X-8)/(X-9)
[(x-4)(x-6)-(x-5)2]/(x-5)(x-6)=[(x-7)(x-9)-(x-8)2]/(x-8)(x-9)
(x2-10x+24-x2+10x-25)/(x2-11x+30)=(x2-16x+63-x2+16x-64)/(x2-17x+72)
整理得:
-1/(x2-11x+30)=-1/(x2-17x+72)
即:
x2-11x+30=x2-17x+72
17x-11x=72-30
6x=42
x=7
*-----------------------------------------------*| 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+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
2x+3x+4x+5x+x+6x+7x=100
x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=?
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
x^-6x+5=x+4
(x+3x+5x...+2009x)-(2x+4x+6x+...+2010x)
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^6-x^5+x^4-x^2+x-1
求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X
1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12=97.8x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12=97.8 好多年没有用过过数学公式了 想不起来怎么算了 想知道 X值是多少
已知x=2π+1求 |x-1|+|x-2|+|x-3|+|x-4|+|x-5|+|x-6|+|x-7|+|x-8|+|x-9|+|x-10|
已知x=2π+1.求(X-1)+(X-2)+(X-3)+(X-4)+(X-5)+(X-6)+(X-7)+(X-8)+(X-9)+(X-10)
1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11=17.7这个方程怎么样求解?
如果1+x+x^2+x^3=0,求x+x^2+X^3+x^4+x^5+x^6+x^7+x^8的值,
(X+5)/(X+4) +(X+8)/(X+7 )=(X+7)/(X+6 )+(X+6)/(X+5 )
(x-5)/(x/7)+(x-2)/(x-4)=(x-3)/(x-5)+(x-4)/(x-6)
解分式方程:(x-4)/(x-5)+(x-8)/(x-9)=(x-7)/(x-8)+(x-5)/( x-6)