题目内容
计算:a
|
分析:根据根式的运算性质,我们易根据
=a
,am•an=am+n,(am)n=am•n,易计算出结果.
a |
1 |
2 |
解答:解:
=
=
=
=
=(a
)
=a
•
=a
故答案为:a
a
|
=
a•a
|
=
a1+
|
=
a1+
|
=
a
|
=(a
3 |
2 |
1 |
2 |
=a
3 |
2 |
1 |
2 |
=a
3 |
4 |
故答案为:a
3 |
4 |
点评:本题考查的知识点根式的化简运算,解答本题的关键是熟练掌握根式的运算性质.
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