Your umpteen posts have been removed.
Once you write up WHAT YOU HAVE TRIED TO SOLVE EACH PROBLEM, please re-post, and someone here will be happy to comment.
if b is a real number satisfying b^4 + 1/(b^4) = 6, find the value of :-
(b + i/b)^16 where i = sqrt of -1
2 answers
(b)^4+(i/b)^4=6 and
then use (a^2+1/a^2)=(a+1/a)^2-2 multiple times
(b+i/b)^16=4096
then use (a^2+1/a^2)=(a+1/a)^2-2 multiple times
(b+i/b)^16=4096
2 answers