3/(x+1)+1/(x-1)=6/(x²-1),解方程

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3/(x+1)+1/(x-1)=6/(x²-1),解方程3/(x+1)+1/(x-1)=6/(x²-1),解方程3/(x+1)+1/(x-1)=6/(x²-1),解方程两边乘(

3/(x+1)+1/(x-1)=6/(x²-1),解方程
3/(x+1)+1/(x-1)=6/(x²-1),解方程

3/(x+1)+1/(x-1)=6/(x²-1),解方程
两边乘(x+1)(x-1)
3x-3+x+1=6
4x=8
x=2
经检验,x=2是方程的解

3/x-1=4/x 6/x+1=x+5/x(x+1) 解九宫格题目(X为未知数)9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1 请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360 解下列方程!就三道!解下列方程.1、x/x-2 - 1-x²/x²-5x = 2x/x-3(x/x-2 - 1-x²不是一起的!)2、5x/x²+x-6 - 5-2x/x²-x-12=7x-10/x²-6x+8(5x/x²+x-6 - 5-2x不是一起的!)3、x-4/x-5 + x-8/x-9=x-7/x- 1.(1/X-1 )-2=X^-3X/X^-12.(X/X+1)^+5(X/X+1)+6=03.(8(X^+2X)/X^-1)+ 3(X^-1)/X^+2x 2x-6/4-4x+x^2/(x+2)*x^2-4/3-x,其中x=-1 (x-2)(x²-6x-9)-x(x²-2x-15),其中x=1/3 x/(x-2)-(1-x ² )/(x ² -5x+6)=(2-x)/(x-3) 解方程,急 *-----------------------------------------------*| 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*x*x*x+2008x*x+2007x+2008(提示:x*x*x-1=(x-1)*(x*x+x+1)) [x(x+1)+x平方(x-1)]+(-3x) 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 求:(x-2)(x²-6x-9)-x(x-3)(x-5)其中x=三分之一.以及x²(x-1)-x(x²+x-1)其中x=二分之一的答案 1、x*(x+3)*(x+6)*(x+9)=68040 2、x*(x+1)*(x+2)*(x+3)*(x+4)=55440 (x/x+1)-(x+3/x+1)*(2x平方+6x/x平方+6x+9) 其中x=2 要先把字母化简! 计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1 先化简再求值:(x+3)/(x²-3x)-(x-1)/(x²-6x+9)除(x²-9)/x 其中x=2 5x-3(2x+1)=6x-4(5-3x)求x