(1)解方程:xx+2+x+22?x=8x2?4;(2)解不等式组:x+2(x?1)≤41+4x3>x

2025-05-09 04:33:33
推荐回答(1个)
回答(1):

(1)去分母得:x(x-2)-(x+2)2=8,
整理得:x2-2x-x2-4x-4=8,
解得:x=-2,
经检验x=-2是增根,分式方程无解;
(2)

x+2(x?1)≤4①
1+4x
3
>x②

由①得:x≤2;
由②得:x>-1,
则不等式组的解集为-1<x≤2.