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2018秋八年级数学上册第二章实数2.2平方根第2课时平方根的概念及其开平方运算习题课件（新版）北师大版.ppt

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第二章 实数 2.2 平方根 第2课时 平方根的概念及其开平方运算,x2a,正、负根号a,平方,两,互为相反数,没有,0,a0,开平方,被开方数,逆运算,非负,C,C,A,D,B,3,3,5,5,C,

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