Question

raiz de 3/7 x (raiz de 1/3 + 1/4)

Answer 1

$\sqrt{ \frac{3}{7} } \times \sqrt{ \frac{1}{3}+ \frac{1}{4} } = \\ \\ \sqrt{ \frac{3}{7} } \times \sqrt{( \frac{4+3}{12}) } = \\ \\ \sqrt{ \frac{3}{7} } \times \sqrt{ \frac{7}{12} } = \\ \\ \sqrt{ \frac{\not3}{\not7}\times \frac{\not7}{\not12_4} } = \\ \\ \sqrt{ \frac{1}{4} } = \frac{1}{2}$