If x=2+√3, find the value of x+1x.
x=2+√3
Then, 1x=12+√3=1×(2−√3)(2+√3)(2−√3)
=2−√3(2)2−(√32)=2−√34−3=2−√31
∴ x+1x=2+√3+2−√3=4
Find the value of x3+1/x3,if x2+1/x2=14