(1)解不等式,并把它的解集表示在数轴上;
(2)计算:.
更新时间:2024-03-27 18:18:16
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【推荐2】化简与计算
(1)
;
(2)
;
(3)
;
(4)先化简,再求值.
,其中
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(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf336e2d48fb6486dd1dc1c3c5d1245.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5be7cac00c6aa81a8b7241a8fa8a181.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d741e08a964d211b10ac6b7715711a.png)
(4)先化简,再求值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27a6e6f6775cbde366c99808fff0c0ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c20f27d575ace6dd998d7b8243b25110.png)
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【推荐1】解不等式(组),并将解集表示在数轴上:
(1)解不等式:
(2)解不等式组:
(1)解不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f87a8a82f14566f8da294f0bb7e86f8e.png)
(2)解不等式组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ddb663eb9c12c212d53bd79091e5e0f.png)
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【推荐1】(1)分解因式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539a72f7679597b2b9c46753b1790f20.png)
(2)解不等式,并把解集在数轴上表示出来:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539a72f7679597b2b9c46753b1790f20.png)
(2)解不等式,并把解集在数轴上表示出来:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/691f4328b87680ed91b5111c4d4163eb.png)
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【推荐2】解不等式组
请结合题意填空,完成本题的解答.
(Ⅰ)解不等式①,得 ;
(Ⅱ)解不等式②,得 ;
(Ⅲ)把不等式①和②的解集在数轴上表示出来.
![](https://img.xkw.com/dksih/QBM/2018/4/23/1930414077190144/1931547571265536/STEM/6810f4171db14d59889947580f9846aa.png?resizew=249)
(Ⅳ)原不等式组的解集为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14a94247711b088e3c65095e63d4249b.png)
(Ⅰ)解不等式①,得 ;
(Ⅱ)解不等式②,得 ;
(Ⅲ)把不等式①和②的解集在数轴上表示出来.
![](https://img.xkw.com/dksih/QBM/2018/4/23/1930414077190144/1931547571265536/STEM/6810f4171db14d59889947580f9846aa.png?resizew=249)
(Ⅳ)原不等式组的解集为 .
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