性质1 参考图1-2,完成以下填空: √2 面积aa 般地,二次根式有下面的性质: ai a ≥0)
参考图1-2,完成以下填空: ( ) ( ) 2 2 2 1 2 _____; 7 _____; _____. 2 = = = a a 面积 a ( ) ( ) 2 a a a = 0 一般地,二次根式有下面的性质: ( )( ) ( ) ( ) ( )( ) ( ) 2 2 2 2 2 2 1 1 3 ______, 2 ______, 3 2 ________, 7 3 2 4 5 ________, 5 ________. 3 = = = − = − − =
? 般地,二次根式有下面的性质 性质(: √a|=a(a≥0 一=∵一k )()
一般地,二次根式有下面的性质: ( )( ) ( ) ( ) ( )( ) ( ) 2 2 2 2 2 2 1 1 3 ______, 2 ______, 3 2 ________, 7 3 2 4 5 ________, 5 ________. 3 = = = − = − − = a a ? 1716549 ( ) 2 a a a = ( 0)