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2
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2
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| lnb |
| b-1 |
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| lnb |
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| 2 |
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| a | x |
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| x |
| 3 |
| 2 |
| 9(x-1) |
| x+5 |
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| x-a | ||
|
| 2 |
| 1+b2 |
| lnb |
| b-1 |
| 1 | ||
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