题目内容
(
-
)2002•(
+
)2003=______.
| 2 |
| 3 |
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| 3 |
原式=(
-
)2002•(
+
)2002•(
+
)
=(2-3)2002•(
+
)
=1×(
+
)
=
+
.
故答案为:
+
.
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
=(2-3)2002•(
| 2 |
| 3 |
=1×(
| 2 |
| 3 |
=
| 2 |
| 3 |
故答案为:
| 2 |
| 3 |
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