Question

if x=3+root 5, then find x+1/x

Answer 1

$x = 3 \sqrt{5} \\ x+1/x \\ 3 \sqrt{5} + 1/3 \sqrt{5} \: \\ \frac{3 \sqrt{5} \times 3 \sqrt{5}}{3 \sqrt{5}} + \frac{1}{3 \sqrt{5}} \\ = \frac{9 \times 5 + 1}{3 \sqrt{5} } \\ = \frac{45 + 1}{3 \sqrt{5} } \\ = \frac{46}{3 \sqrt{5} }$

I hope this is helpfull, please

drop a thanks and also make my

answer as brainlist please ,

STAY HOME STAY SAFE