Question

quanto que é 2√2/3 * 2√2/3?

Answer 1

$2 \times \sqrt{ \frac{2}{3} } \times 2 \times \sqrt{ \frac{2}{3} } \\ = 2 \times 2 \times \sqrt{ \frac{2}{3} } \times \sqrt{ \frac{2}{3} } \\ = 4 \times \sqrt{ \frac{2}{3} \times \frac{2}{3} } \\ = 4 \times \frac{ \sqrt{4} }{ \sqrt{9} } \\ = 4 \times \frac{2}{3} \\ = \frac{8}{3}$