Question

if a =(7+4√3)^2005 and b=(7-4√3)^2005 then (a+1)^-1+(b+1)^-1 is

Answer 1

______________________________________

Answer

______________________________________

a=(7+4√3)

b=(7-4√3)

(a +7+4) (b+7-4)

= 11-3________

=8_________

_________________________________________________________________________________________________________________________________