Question

write the simplest form of rationalising factor for the given surds 7 apon 5 under root 13​

Answer 1

$\large\fbox\red{Answer}$

$\frac{7}{5 \sqrt{13} } \\ \\ = \frac{7}{5 \sqrt{13} } \times \frac{5 \sqrt{13} }{5 \sqrt{13} } \\ \\ = \frac{35 \sqrt{13} }{25 {( \sqrt{13} )}^{2} } \\ \\ = \frac{35 \sqrt{13} }{25 \times 13} \\ \\ = \frac{7 \sqrt{13} }{5 \times 13 } \\ \\ = \frac{7 \sqrt{13} }{65}$

Thnku ❣