问题
解答题
计算: (1)(
(2)2×(-1)2012 -
(3)-
|
答案
(1)原式=-45+70-35
=-10;
(2)原式=2×1-2×(-2)
=2+4
=6;
(3)原式=-
×(-9×3 4
-2)+4 9 1 2
=
+9 2 1 2
=5.
计算: (1)(
(2)2×(-1)2012 -
(3)-
|
(1)原式=-45+70-35
=-10;
(2)原式=2×1-2×(-2)
=2+4
=6;
(3)原式=-
×(-9×3 4
-2)+4 9 1 2
=
+9 2 1 2
=5.