问题
解答题
计算: (1)
(2)|1-
(3)(-2)3×
|
答案
(1)原式=
+0.5-21 2
=1-2
=-1;
(2)原式=
-1+2
-3
+2-2 3
=(
-2
)+(-2
+3
)+(2-1)3
=1;
(3)原式=-8×4+(-4)×
-31 4
=-32-1-3
=-36.
计算: (1)
(2)|1-
(3)(-2)3×
|
(1)原式=
+0.5-21 2
=1-2
=-1;
(2)原式=
-1+2
-3
+2-2 3
=(
-2
)+(-2
+3
)+(2-1)3
=1;
(3)原式=-8×4+(-4)×
-31 4
=-32-1-3
=-36.