Ответ:
Объяснение:
n · (n +1) · (n+2) · (n+3) + 1 = (n · (n+3)) · ((n+1) · (n+2)) + 1 =
= ( n² + 3n) · (n² + 3n + 2) + 1 =
= m · ( m + 2) + 1 = m² + 2m + 1 = ( m + 1 )² ; m = n² + 3n
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Ответ:
Объяснение:
n · (n +1) · (n+2) · (n+3) + 1 = (n · (n+3)) · ((n+1) · (n+2)) + 1 =
= ( n² + 3n) · (n² + 3n + 2) + 1 =
= m · ( m + 2) + 1 = m² + 2m + 1 = ( m + 1 )² ; m = n² + 3n