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

$${(1+2+3+4)}^2=1^2+2^2+3^2+4^{2}right?$$$${(1+2+3+4)}^2=1^3+2^3+3^3+4^{3}right?$$

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

$${(1+2+3+4)}^2=1^2+2^2+3^2+4^2$$$$False$$$${(1+2+3+4)}^2=1^3+2^3+3^3+4^3$$$$True$$

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

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Commented by mahdipoor last updated on 30/Jun/22

$$1^3+2^3+...+a^3={\left(\frac{a(a+1)}{2}\right)}^2={(1+2+...+a)}^2$$

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

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