Germany - Math Olympiad Algebra Problem | X= ?

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[@v.krishnamurthib610]

Very nice sum

[@elchile336]

substraction* (unless you're counting the rule a - b = a + (-b))

[@masterythemaths]

Good solution ❤

[@markmauldin1327]

I substituted a=x3 which gave me a^2 -a -2 = 0, solving for a you get (a-2)(a+1)=0 so a=2 or a=-1 substitue x^3 for a and you get directly to x=2^(1/3) or x=-1

[@user-xx3es5de8d]

Professor, não seria mais fácil descobrir o valor do logaritmo X ao cubo = Y calculando a equação de 2° grau utilizando a fórmula de Bhaskara?

[@macumbonanga7935]

Baskhara, logaritmo e equação do 2ndo grau?😢😅😮

[@StevenMRSenior]

Shouldn’t there be a total of six roots. You only have 2 real plus 2 complex.

[@user-iw8dr1ew6u]

Оно же в уме решается😂

[@JohnWayne-wn6ob]

2^(1/3)😅😅😅

[@relaxxynz1667]

X = 1 is also possible

[@StevenMRSenior]

X=1 is not a solution.

[@pixelmath6719]

Excelente solución, me gusta el estilo... Algo así como kzbin.info/www/bejne/o3ObmHqKZ7SMo9k