Simplifique as expressões abaixo:
10!
-----
8!
b)12!
--------
9! 3!
c)m!
-------
(m-1)!
d(n+1)!
-----------
(n-1)!
e)(n+1)!
-----------
n
f)m!
--------
(m-2)!
Soluções para a tarefa
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a) 10! / 8! => 10*9*8!/8! = > 90
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b) 12! / 9!3! => 12*11*10*9! / 9!3! => 12*11*10/3*2*1 => 220
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c) m!/(m-1)! => m*(m-1)! / (m-1)! => m
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d)(n+1)!/ (n-1)! => (n+1).n. (n-1)! / (n-1)! => n(n+1)
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e) (n+1)!/ n! => (n+1).n! / n! => (n+1)
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f) m! / (m-2)! => m.(m-1).(m-2)! / (m-2)! => m(m-1)
a) 10! / 8! => 10*9*8!/8! = > 90
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b) 12! / 9!3! => 12*11*10*9! / 9!3! => 12*11*10/3*2*1 => 220
=======
c) m!/(m-1)! => m*(m-1)! / (m-1)! => m
=======
d)(n+1)!/ (n-1)! => (n+1).n. (n-1)! / (n-1)! => n(n+1)
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e) (n+1)!/ n! => (n+1).n! / n! => (n+1)
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f) m! / (m-2)! => m.(m-1).(m-2)! / (m-2)! => m(m-1)
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