alcosby
26.06.2019 •
Mathematics
(n+2)! /n! how do i simplify this? show steps
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Ответ:
(n+2)(n+1)
Step-by-step explanation:
Write out the numerator and cancel common factors:
(n+2)!/n! = (n+2)(n+1)n!/n! = (n+2)(n+1)
You might be expected to multiply it out:
= n·n +2·n +n·1 +2·1
= n² +3n +2
Ответ: