Найдите целые решения неравенства : 〖2х〗^2-7х+6<0

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Формула объема куба:

                                               V = a³        где а  -  длина ребра куба                        (1)

Если объем куба с данным ребром а  увеличить в 8 раз, получим куб объемом 8V.

Тогда, обозначив длину ребра этого куба через х, получим равенство: 

                                               8V = х³                                                                         (2)

Из (1)   и  (2)   =>   8a³  =  х³     =>   х = ∛ 8 * a       =>   х = 2a

ответ:  ребро куба нужно увеличить в 2 раза.