Only intelligent can solve this IQ.

5+3=1628

9+1=80810

8+6=28214

7+2=4559

Then

6+2=??


Solution:  it simple.. first (6+2=8) will be written on right side..
then (6-2=4) vill be written on left side of 8
and then (8*4=32) vill be writen on extreme left.. so the answer ix 3248