> 数学 >
计算:
(1)(2
12
-3
1
3
)×
6

(2)(3+2
5
2-(4+
5
)(4-
5
).
人气:299 ℃ 时间:2020-01-30 06:17:37
解答
(1)原式=(4
3
-
3
)×
6

=3
3
×
3
×
2

=9
2

(2)原式=9+12
5
+20-(16-5)
=29+12
5
-1
=28+12
5
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