Question

一道初中数学题100分急求！！！

（1-2）^2 / X-1
— —
X+1 X+1

看得懂吧？。。
就是 （1- X+1分之2）的平方除以X+1分之X-1
我要过程！！！！！！！

Answer 1

[1-2/(x+1)]^2÷(x-1)/(x+1)
=[1-2/(x+1)]^2*(x+1)/(x-1)
=[(x+1-2)/(x+1)]^2*(x+1)/(x-1)
=[(x-1)/(x+1)]^2*(x+1)/(x-1)
=(x-1)^2/(x+1)^2*(x+1)/(x-1)
=(x-1)/(x+1)

Answer 2

不会

Answer 3

结果为X-1分之X+1
1-（2/(x+1)）通分为X-1分之X+1
之后平方
只有约掉一个

Answer 4

等于 x-1/x+1

Answer 5

分子通分：1-2/（x+1)=(x-1)/(x+1)
所以原式=[（x-1)/(x+1)]^2/(x-1)/(x+1)
=(x-1)/(x+1)

Answer 6

原式=（X+1分之x+1 - X+1分之2）的平方除以X+1分之X-1
=（X+1分之X-1）的平方除以X+1分之X-1
=X+1分之X-1