Найдите значение выражения:
а) $\sqrt{10} * \sqrt{40}$;
б) $\sqrt{12} * \sqrt{3}$;
в) $\sqrt{162} * \sqrt{2}$;
г) $\sqrt{\frac{2}{3}} * \sqrt{\frac{3}{8}}$;
д) $\sqrt{110} * \sqrt{4,4}$;
е) $\sqrt{1\frac{4}{5}} * \sqrt{0,2}$;
ж) $\frac{\sqrt{999}}{\sqrt{111}}$;
з) $\frac{\sqrt{15}}{\sqrt{735}}$.
$\sqrt{10} * \sqrt{40} = \sqrt{4} * (\sqrt{10})^2 = 2 * 10 = 20$
$\sqrt{12} * \sqrt{3} = \sqrt{4} * (\sqrt{3})^2 = 2 * 3 = 6$
$\sqrt{162} * \sqrt{2} = = \sqrt{81} * (\sqrt{2})^2 = 9 * 2 = 18$
$\sqrt{\frac{2}{3}} * \sqrt{\frac{3}{8}} = \frac{\sqrt{2} * \sqrt{3}}{\sqrt{3} * \sqrt{2} * \sqrt{4}} = \frac{1}{\sqrt{4}} = \frac{1}{2}$
$\sqrt{110} * \sqrt{4,4} = \sqrt{11} * \sqrt{10} * \sqrt{4} * \frac{\sqrt{11}}{\sqrt{10}} = \sqrt{4} * (\sqrt{11})^2 = 2 * 11 = 22$
$\sqrt{1\frac{4}{5}} * \sqrt{0,2} = \frac{\sqrt{9}}{\sqrt{5}} * \frac{\sqrt{1}}{\sqrt{5}} = \frac{\sqrt{9}}{(\sqrt{5})^2} = \frac{3}{5}$
$\frac{\sqrt{999}}{\sqrt{111}} = \frac{\sqrt{9} * \sqrt{111}}{\sqrt{111}} = \sqrt{9} = 3$
$\frac{\sqrt{15}}{\sqrt{735}} = \frac{\sqrt{15}}{\sqrt{15} * \sqrt{49}} = \frac{1}{\sqrt{49}} = \frac{1}{7}$
Пожауйста, оцените решение