Question

For each integer n with n ≥ 2, let P(n) be the formula ∑_(i=1)^(n-1 )▒〖i(i+1)〗 = (n(n-1)(n+1))/3

i. Is P(2) true? ii. Write P(k). iii. Write P(k + 1).

Answer 1

Answer:

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