若2<x<3，则=_。-九年级数学

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• 计算：+20120-九年级数学
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• 下列计算中，正确的是[]A.|-2|=-2B.C.a3·a2=a5D.2x2-x=x-九年级数学
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• -八年级数学
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• 计算：-九年级数学
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• 若二次根式在实数范围内有意义，则x的取值范围是.-九年级数学
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