x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=?

来源：学生作业帮编辑：神马作文网作业帮分类：数学作业时间：2024/11/23 20:30:22

(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

x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=? x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 求方程解x-5/x-4+x-9/x-8=x-8/x-7+x-6/x-5 x-4／x-5-x-5／x-6=x-7／x-8-x-8／x-9求大神帮助 1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少已知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 y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1 设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10), x-4/x-5-x-7/-x-8=x-5/x-6-x-8/x-9 解分式方程：(x-4)/(x-5)+(x-8)/(x-9)=(x-7)/(x-8)+(x-5)/( x-6) 解分式方程（X-4)/(X-5)-(X-5)/(X-6)=(X-7)/(X-8)-(X-8)/(X-9) 解方程：(x-4)/(x-5)-(x-5)/(x-6)=(x-7)/(x-8)-(x-8)/(x-9)