题目内容
计算(1)(-1)2×5+(-1)×52-14×5+(-1+5)2
(2)(-32)×(-
)-(
+
-
-
)×24
(2)(-32)×(-
| 1 |
| 32 |
| 1 |
| 2 |
| 2 |
| 3 |
| 3 |
| 4 |
| 11 |
| 12 |
(1)原式=1×5-25-5+42,
=5-25-5+16,
=-9;
(2)原式=1-(
×24+
×24-
×24-
×24),
=1-(12+16-18-22),
=1-12-16+18+22,
=13.
=5-25-5+16,
=-9;
(2)原式=1-(
| 1 |
| 2 |
| 2 |
| 3 |
| 3 |
| 4 |
| 11 |
| 12 |
=1-(12+16-18-22),
=1-12-16+18+22,
=13.
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