Question

if x=4_√15 find the value of (x+1\x). 2

Answer 1

Given x= 4-√15
Value of (x + 1/x)2
(4-√15 + 1/4-√15)
(4-√15 + 4+√15/11)
(44-11√15/11 +4+√15/11)
(48-10√15)2
96-20√15