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| Homework 21Details| Section | Problem | Notes
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| 1.8 | 14 | This one is really easy if you try some examples. You will quickly discover whether or not it is true.
| | 2.4 | 16f | Recall that sometimes you are better off not multiplying everything out as you go. Also, this one might be more clear if you work downward.
| | 6.3 | 38
| | Review Question | 2 | On page 634 |
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