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如果,则()A.a<B.a≤C.a>D.a≥-九年级数学
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使有意义的x的取值范围是(▲)A.x>-1B.x≥-1C.x≠-1D.x≤-1-八年级数学
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-九年级数学
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下列各式在实数范围内有意义,分别求x的取值范围。小题1:小题2:-九年级数学
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-九年级数学
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题目简介
若则.-八年级数学
题目详情
答案
试题考查知识点:非负数的性质
思路分析:几个非负数之和为0,那么每一个非负数均为0
具体解答过程:
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