Question

(856×856+167×167)+(856×856-167×167) (856×856)+(167×167)

Answer 1

use BODMAS rule

(732736+27889)+(732736-27889)(732736)+(27889)
(760625)+(704847) x (732736) + (27889)
760625+516466771392+27889
answer = 516467559906