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(2n+1)! (n+1)!
_____ +_____=92
(2n-1)! (n+1)!

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AkildaMatematikrans

Cevap:

(2n+1).(2n).(2n-1)! (n+1).(n).(n-1)!

_______________+____________=92

(2n-1)! (n-1)!

(2n+1)(2n)+(n+1).(n)=92

4n²+2n+n²+n=92

5n²+3n=92

n=4 için

5.4²+3.4=92

N=4

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