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> 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-九年级数学
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-九年级数学
题目简介
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-九年级数学
题目详情
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
题型:解答题
难度:偏易
来源:不详
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)
先求出各个不等式的解集,然后求出它们的公共集
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已知,为实数,且满足,那么=▲.-九年级数学
计算:=▲.-九年级数学
计算-九年级数学
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题目简介
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-九年级数学
题目详情
小题1:计算:
小题2:解不等式组:
答案
小题1:原式=
=2+4-
=5-
小题2:由①得:
(画在数轴上2分,图略)∴原不等式组的解集是:-3<