Question

x= 5+ 2√6,
then find x+1/x​

Answer 1

Answer:

x =5+2√6

1/x =1/5+2√6 ×5-2√6/5-2√6

=5-2√6/(5)square - (2√6) square

=5-2√6/25-4×6

=5-2√6/25-24

=5-√6

x+1/x=[(5+2√6) +( 5-2√6)]

=5+2√6+5-2√6

=5+5

=10 ans