问题
解答题
计算: (1)2
(2)
|
答案
(1)2
•(312
-448
-31 8
)27
=4
•(123
-3
-92
)3
=4
•(33
-3
)2
=36-4
;6
(2)
+2
-12
-418 1 2
=2(
+1)+32
-22 2
=2+3
.2
计算: (1)2
(2)
|
(1)2
•(312
-448
-31 8
)27
=4
•(123
-3
-92
)3
=4
•(33
-3
)2
=36-4
;6
(2)
+2
-12
-418 1 2
=2(
+1)+32
-22 2
=2+3
.2