问题
解答题
化简与计算: (1)
(2)(
(3)
(4)
|
答案
(1)
×8 18
=
=8×18
=12;144
(2)(
-18
)÷24
+(1-6
)23
=
÷18
-6
÷24
+1-26
+(3
)23
=
-2+1-23
+33
=2-
;3
(3)
+8
-21 3 1 2
=2
+2
-2×3 3 2 2
=2
+2
-3 3 2
=3
+2
;3 3
(4)
-(π-2)0-|1-27
|3
=3
-1-(3
-1)3
=3
-1-3
+13
=2
.3