问题
解答题
细心算一算 (1)(2
(2)
(3)|-
|
答案
(1)原式=(2
)2-(33
)22
=12-18
=-6;
(2)原式=2
+5
-35 5
=0;
(3)原式=
+1-23 3
=1-
.3
细心算一算 (1)(2
(2)
(3)|-
|
(1)原式=(2
)2-(33
)22
=12-18
=-6;
(2)原式=2
+5
-35 5
=0;
(3)原式=
+1-23 3
=1-
.3