Japanese - A Nice Math Olympiad Problem

[@cachotrelles4715]

Excelente.👏👏 Gracias!!!

[@learncommunolizer]

Thank you very much 🙏🙏🙏

[@ЕленаВасильевна-и4щ]

Классно!❤

[@learncommunolizer]

Thanks 🙏🙏🙏

[@zonked1200]

Did you mess this up? You went from (x + y)( x^2 - xy + y^2) for (a+b)^3 + a^3 to breaking down the x^2 - xy and then a^2 without the a^3 at the end.

[@is7728]

Why a^3?

[@SidneiMV]

34 = a . 39 = b. [(a + b)³ + a³]/[(a + b)³ + b³] = (2a + b)/(a + 2b)[(a + b)² - a(a + b) + a²]/[(a + b)² - b(a+ b) + b²] = (2a + b)/(a + 2b)(a² + ab + b²)/(a² + ab + b²) = (2a + b)/(a + 2b) = 107/112