Question

Reducir la expresion

Answer 1

$= \frac{ - \sqrt{8} }{ \sqrt{18} } \\ = \frac{ - \sqrt{8} }{ \sqrt{18} } \times \frac{ \sqrt{18} }{ \sqrt{18} } \\ = \frac{ - \sqrt{8 \times 18} }{ \sqrt{18} \times \sqrt{15} } \\ = \frac{ - \sqrt{144} }{18} \\ = \frac{ - 12}{18} \\ = - \frac{2}{3}$