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Question Number 172688 by mr W last updated on 30/Jun/22

{(1 + 2 + 3 + 4)}^{2} = 1^{2} + 2^{2} + 3^{2} + 4^{2} r i g h t ?

{(1 + 2 + 3 + 4)}^{2} = 1^{3} + 2^{3} + 3^{3} + 4^{3} r i g h t ?

Commented by Rasheed.Sindhi last updated on 30/Jun/22

{(1 + 2 + 3 + 4)}^{2} = 1^{2} + 2^{2} + 3^{2} + 4^{2}

F a l s e

{(1 + 2 + 3 + 4)}^{2} = 1^{3} + 2^{3} + 3^{3} + 4^{3}

T r u e

Commented by mr W last updated on 30/Jun/22

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Commented by mahdipoor last updated on 30/Jun/22

1^{3} + 2^{3} + \dots + a^{3} = {(\frac{a (a + 1)}{2})}^{2} = {(1 + 2 + \dots + a)}^{2}

Commented by mr W last updated on 30/Jun/22

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