Doprowadź wyrażenie do najprostszej postaci [zadanie z silnią]
a) (n+2)(n+1)n! =
b) (2n+1)(2n) =
c) (2n+2)! / (2n)! =
a)=n3
b)= 5n
c6n
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a)=n3
b)= 5n
c6n