Spain l Olympiad Math Algebric Problem l x=?

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Spain l Olympiad Math Algebric Problem l x=? #maths #matheolympiad #mathcompetition #mathematics #mathcontest #mathoperation #mathstricks #mathoperation #education #mathviral #mathviralvideo
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x^9 + x^6 = 36
x^6 (x^3 + 1) = 36 = 9 x 4 =3^2 (3 +1)
x^ 3 = 3
Divide power by 3 on both sides
Then x = 3^(1/3)

pinjalabhagiradha
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А если сразу увидеть что 36= 3^3+3^2, у^3+y^2=3^3+3^2?

АлександрВладимиров-рй