1.(x-2/x+2)-16/x2-4=x+2/x-2

问题描述:

1.(x-2/x+2)-16/x2-4=x+2/x-2
2.1- x-3/x-1=x2-2/x2-8x+7 -5-x/7-x
3.当x等于 时,分式1/2x-1无意义;当x= 时,分式 x的绝对值-2/x-2值为零
4.当x= 时,分式3/2x-1与分式3/x-4互为相反数
5.若方程2x/1-2x +3 +k/2x-1=0有增根,则k=
6.(2m/m2-4 -1/m-2)除以(1- 1/m+2)
7.(x/x-2 - x/x+2) 除以4x/x-2
8.(2/3x -2/x+y(x+y/3x -x-y)除以x-y/x
9.(1- 2x/x+y)除以 x2-2xy+y2/3x+3y + x2+xy/x2-y2
10.已知a-2b=2 a不等于1 求 a2-4b2/a2-4b2+a+2b -a2+4ab-4b2的值
11.1/x2-2x -1/x =2/x-2
12.2x-1/x+4 -5= 96/x2-16 -1-3x/4-x
13.1/x2-5x+6 -2/x2-4x+3 + 1/x2-3x+2
感激不尽 越快越好!

1.(x-2/x+2)-16/x2-4=x+2/x-2(x-2)² - 16 = (x+2)²x²-4x+4-16 = x²+4x+48x = -16x=-22、1- x-3/x-1=x²-2/x²-8x+7 -(5-x/7-x)1- x-3/x-1=(x²-2)/(x-7)(x-1) +(5-x/x-7)x&...