`5^4 = 5.5.5.5 = 625`
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`n^3 = 125`
`=> n^3 = 5.5.5`
`=> n^3 = 5^3`
`=> n = 3`
_________________________________________
`11^n = 1331`
`=> 11^n =11.11.11`
`=> 11^n = 11^3`
`=> n = 3`
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`chúc bn học tốt `