Question

вычислите: 1) -$\sqrt338 : \sqrt98$

Answer 1

$- \sqrt{338} \div \sqrt{98} = - \sqrt{169 \times 2} \div \\ \sqrt{49 \times 2} = - 13 \sqrt{2} \div 7 \sqrt{2} = \\ - \frac { 13}{7}$