Question

http://static.k12.com/packages4/files/media/mathml_bda8343fe3cb34e3c1baeb47e8bbc88331b21958_1.gif











A.










B.










C.










D.

Answer 1

\[\sqrt{\frac{a}{b}}=\frac{\sqrt{a}}{\sqrt{b}}\]
\[\sqrt{\frac{36}{121}}=\frac{\sqrt{6}}{\sqrt{121}}\] and now it should be more or less obvious