Q&A #3398
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Q&A #3398 |
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From: Sarah <saw109@hotmail.com>
To: Teacher2Teacher Public Discussion
Date: 2004050609:16:30
Subject: Re: Re: HELP
1 1 a+n
------ + ------- = --------
(a-1)!n! a!(n-1)! a!n!
a!(n-1)! + (a-1)!n! a+n
--------------------- = ------
(a-1)!a!(n-1)!n! a!n!
a(a-1)! (n-1)! + n(n-1)! (a-1)! a+n
------------------------------------- = ------
(a-1)!a!(n-1)!n! a!n!
(a-1)!(n-1)! [a+n] a+n
--------------------- = -----
(a-1)!(n-1)!a!n! a!n!
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