(X-4/X-5)-(X-5/X-6)=(X-7/X-8)-(X-8/X-9)咋做拜托各位了 3Q

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：2024/11/06 08:40:26

(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)] 1/(X-5)(X-6)=1/(X-8)(X-9) X^2-11X+30=X^2-17X+72 6X=42 X=7

x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? |X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10| 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-5/x-6=x-7/x-8 - x-8/x-9求x=? 解分式方程 x-7/x-9+x-3/x-5=x-4/x-6+x-6/x-8 解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8) （1） x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8 1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550 a*b=2×a+b 计算x*2x*3x*4x*5x*6x*7x*8x*9x=3039 x= 1x()+2x()+3x()+4x()+5x()+6x()+7x()+8x()加9x()+10x()=1980 1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少