(福建专版)2019春八年级数学下册第十六章二次根式16.1二次根式第2课时二次根式的化简课件(新版)新人教版.pptx

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第2课时 二次根式的化简,5.用基本运算符号(基本运算包括加、减、乘、除、乘方和开方)把数或表示数的字母连接起来的式子称为 .,1,a,a,5,7,代数式,二次根式的非负性,1.计算 的结果是( ). A.2 B.-2 C.2 D.4,答案,答案,答案,解析,答案,答案,答案,

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