问题
解答题
计算: (1)
(2)
(3)
|
答案
(1)原式=
-0.4+2 2
=1 4
-2 2
;3 20
(2)原式=
+2 15
=1 5
;1 3
(3)原式=-
+2
+3
+2
=23
.3
计算: (1)
(2)
(3)
|
(1)原式=
-0.4+2 2
=1 4
-2 2
;3 20
(2)原式=
+2 15
=1 5
;1 3
(3)原式=-
+2
+3
+2
=23
.3