Question

$(\sqrt{3} \frac{6}{7} -\sqrt{1} \frac{5}{7} ):\sqrt \frac{3}{28}$

Answer 1

Ответ:

= 2

Объяснение:

$( \sqrt{3 \frac{6}{7}} - \sqrt{1 \frac{5}{7} }) \div \sqrt{ \frac{3}{28} } = ( \sqrt{ \frac{3 \times 7 + 6}{7}} - \sqrt{ \frac{1 \times 7 + 5}{7}}) \div \sqrt{ \frac{3}{28}} = ( \sqrt{ \frac{27}{7} } - \sqrt{ \frac{12}{7} } ) \div \sqrt{ \frac{3}{28} } = \sqrt{ \frac{27}{7} } \div \sqrt{ \frac{3}{28} } - \sqrt{ \frac{12}{7} } \div \sqrt{ \frac{3}{28} } =$

$= \sqrt{ \frac{27}{7} \div \frac{3}{28}} - \sqrt{ \frac{12}{7} \div \frac{3}{28}} = \sqrt{9 \times 4} - \sqrt{4 \times 4} = 6 - 4 = 2$