Question

if a = 9+4root 5 then find root a - 1/ root a

Answer 1

Given a=9+4root5 Put value of a in root a-1 root a root ( 9+4 root5)-1root(9+4 root5) root(9+4 root5)(1-1) root(9+4 root5)(0)=0 Answer is 0.