Ответ:
(n+2)(n+4)-(n+1)(n+5)=n²+4n+2n+8-n²-5n-n-5=8-5=3, а 3:3=1
Ч.Т.Д.
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Ответ:
(n+2)(n+4)-(n+1)(n+5)=n²+4n+2n+8-n²-5n-n-5=8-5=3, а 3:3=1
Ч.Т.Д.