Question

ajutor dau coroana....​

Answer 1

$a) \frac{3}{ \sqrt{5} } = \frac{3 \sqrt{5} }{5}$

$b) - \frac{7}{ \sqrt{7} } = - \frac{7 \sqrt{7} }{7} = - \sqrt{7}$

$c) \frac{2 \sqrt{6} }{ \sqrt{3} } = \frac{2 \sqrt{3} \times \sqrt{2} }{ \sqrt{3} } = 2 \sqrt{2}$

$d) \frac{3 \sqrt{15} }{ \sqrt{5} } = \frac{3 \sqrt{5} \times \sqrt{3} }{ \sqrt{5} } = 3 \sqrt{3}$

$e) \frac{2}{ \sqrt{7} } = \frac{2 \sqrt{7} }{7}$

$f) - \frac{ 11}{ \sqrt{11} } = - \frac{11 \sqrt{11} }{11} = - \sqrt{11}$