Question

como faz ? ???
√8 = 2x​

Answer 1

$\LARGE\tt{} \sqrt{8} = 2x \\ \\ \LARGE\tt{} \sqrt{ {2}^{3} } \\ \\ \LARGE\tt{} \sqrt{ {2}^{2 + 1} } \\ \\ \LARGE\tt{} \sqrt{ {2}^{2} \times {2}^{1} } \\ \\ \LARGE\tt{} \sqrt{ {2}^{2} \times 2 } \\ \LARGE\tt{} \sqrt{ {2}^{2} } \: \: \sqrt{2} \\ \\\LARGE\tt{}2 \sqrt{2 } = 2x \\ \\ \LARGE\tt{}2x = 2 \sqrt{2} \\ \\ \LARGE\tt{}2x \div 2 = 2 \sqrt{2} \div 2 \\ \\ \LARGE\tt{}x = 2 \sqrt{2} \div 2 \\ \\\LARGE\tt{} x = \sqrt{2} \\ \\ \LARGE\tt{} \boxed{x = \sqrt{2} }$

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