Question

the rationalising factor 5÷ surd of 7​

Answer 1

Answer:

$\frac{5}{ \sqrt{7} } = \frac{5}{ \sqrt{7} } \times \frac{ \sqrt{7} }{ \sqrt{7} } \\ \\ = \frac{5 \sqrt{7} }{ \sqrt{7} \times \sqrt{7} } = \frac{5 \sqrt{7} }{7} \\ \\ thus \: the \: rationalization \: factor \: \\ of \: \frac{5}{ \sqrt{7} } \: is \: \sqrt{7} .$