> 数学 >
把下列各式化成最简二次根式:
(1)
27
5
132122
27

(2)
abc
2
c3
2a4b
人气:266 ℃ 时间:2020-03-28 16:38:42
解答
(1)原式=
27
5
25
27
=
27
5
×
5
3
×
1
3
=9
1
3
=3
3

(2)原式=-
abc
2
×
|c|
a2
×
c
2b
=
c2
4a
2bc
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