问题
解答题
计算 (1)
(2)|-2|-
(3)3
|
答案
(1)原式=4-6-1=-3;
(2)原式=2-
+1 4
-1=1;1 4
(3)原式=3×
+3 3
-21 2- 3 3
=
+2+3
-23 3
=2.
计算 (1)
(2)|-2|-
(3)3
|
(1)原式=4-6-1=-3;
(2)原式=2-
+1 4
-1=1;1 4
(3)原式=3×
+3 3
-21 2- 3 3
=
+2+3
-23 3
=2.