Đáp án+Giải thích các bước giải:
a) `1^3 + 2^3 = 1 + 8 = 9 = 3^2`
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b) `1^3 + 2^3 + 3^3`
`= 1 + 8 + 27`
`= 36 = 6^2`
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c) `1^3 + 2^3 + 3^3 + 4^3`
`= 1 + 8 + 27 + 64`
`= 100 = 10^2`
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d) `1^3 + 2^3 + 3^3 + 4^3 + 5^3`
`= 1 + 8 + 27 + 64 + 125`
`= 225 = 15^2`
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e) `5^2 + 12^2`
`= 25 + 144`
`= 169 = 13^2`
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g) `15^2 + 8^2`
`= 225 + 64`
`= 289 = 17^2`
