题目内容
计算:
(1)2×(-3)3-4×(-3)+15;
(2)-14-2×(-1)+
×(-2)2×|-3+2|.
(1)2×(-3)3-4×(-3)+15;
(2)-14-2×(-1)+
| 1 |
| 4 |
(1)原式=2×(-27)-4×(-3)+15
=-54+12+15
=-27;
(2)原式=-1-2×(-1)+
×4×1
=-1+2+1
=2.
=-54+12+15
=-27;
(2)原式=-1-2×(-1)+
| 1 |
| 4 |
=-1+2+1
=2.
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