题目内容
2010×2012×(
+
)
| 1 |
| 2010×2011 |
| 1 |
| 2011×2012 |
2010×2012×(
+
),
=2010×2012×(
-
+
-
),
=2010×2012×(
-
),
=2010×2012×
-2010×2012×
,
=2012-2010,
=2.
| 1 |
| 2010×2011 |
| 1 |
| 2011×2012 |
=2010×2012×(
| 1 |
| 2010 |
| 1 |
| 2011 |
| 1 |
| 2011 |
| 1 |
| 2012 |
=2010×2012×(
| 1 |
| 2010 |
| 1 |
| 2012 |
=2010×2012×
| 1 |
| 2010 |
| 1 |
| 2012 |
=2012-2010,
=2.
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