Решите 3 часть задания

12.a) $5\sqrt{0,6} =\sqrt{5^2}\cdot \sqrt{0,6} =\sqrt{25\cdot 0,6}= \sqrt{15}$

12.б) $11\sqrt{\dfrac{2}{11}} =\sqrt{11^2}~\cdot \sqrt{\dfrac{2}{11}} =\sqrt{\dfrac{11^2 \cdot2}{11}} =\sqrt{22}$

12.в) $\dfrac{1}{2}\sqrt{6} =\sqrt{\Big(\dfrac{1}{2}\Big)^2}\cdot\sqrt{6} =\sqrt{\dfrac{6}{2^2}} =\sqrt{\dfrac{3}{2}}=\sqrt{1,5}$

12.г) $\dfrac{2}{3}\cdot\sqrt{\dfrac{6}{5}}=\sqrt{\Big(\dfrac{2}{3}\Big)^2}\cdot\sqrt{\dfrac{6}{5}}=\sqrt{\dfrac{4}{9}\cdot\dfrac{6}{5}}= \sqrt{\dfrac{8}{15}$