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这些知识你知道吗?

这些知识你知道吗?. (1) 形如 式子叫二次根式 。. =a(a ≥0 ). 注意:二次根式的被开方数必须是( ). 非负数. 整数. 整式. (2)只有满足被开方数是( )或( );. 被开方数不含开得尽方的(  )或(  );. 因数. 因式. 根号不在(   )上。这三个条件才是最简二次根式. 分母. (3)二次根式的性质:. =. a. ( ) 2 = ( ). 讨论: IaI 等于多少?两个式子的区别?.

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这些知识你知道吗?

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  1. 这些知识你知道吗? (1)形如 式子叫二次根式 。 =a(a ≥0) 注意:二次根式的被开方数必须是( ) 非负数 整数 整式 (2)只有满足被开方数是( )或( ); 被开方数不含开得尽方的(  )或(  ); 因数 因式 根号不在(   )上。这三个条件才是最简二次根式 分母

  2. (3)二次根式的性质: = a ( )2 = ( ) 讨论:IaI等于多少?两个式子的区别?

  3. (4)二次根式的运算: 化简后被开方数相同 1:           的          二次根式是同类二次根式。 2:二次根式的加减实质上就是 。 合并同类二次根式 二次根式的乘法法则: x = (a≥0 b≥0)

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