Question

o dobro do cubo de um numero é 128 qual número é?​

Answer 1

✅ Após resolver os cálculos, concluímos que o valor de "x" é:

      $\Large\displaystyle\text{ \begin{gathered}\boxed{\boxed{\:\:\:\bf x = 4\:\:\:}}\end{gathered} }$  

Resolvendo equação cúbica:

        $\Large\displaystyle\begin{gathered} 2x^{3} = 128\end{gathered}$

          $\Large\displaystyle\begin{gathered} x^{3} = \frac{128}{2}\end{gathered}$

          $\Large\displaystyle\begin{gathered} x^{3} = 64\end{gathered}$

            $\Large\displaystyle\begin{gathered} x = \sqrt[3]{64}\end{gathered}$

            $\Large\displaystyle\begin{gathered} x = 4\end{gathered}$

✅ Portanto, o valor de "x" é:

            $\Large\displaystyle\begin{gathered} x = 4\end{gathered}$

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