题目

【小题1】计算:【小题2】解不等式组:  ,并把解集在数轴上表示出来 答案:【小题1】原式=(4分) =2+4--1(6分) =5-(8分)【小题2】由①得:≤3 (2分) 由②得:>-3 (4分)(画在数轴上2分,图略)∴原不等式组的解集是:-3<≤3(8分)解析:先求出各个不等式的解集,然后求出它们的公共集I have ______ all the papers but I still can’t find my notes.A. looked for B. looked throughC. looked after D. looked out
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