1. 
(963 + 476)2 + (963 - 476)2 = ?
(963 x 963 + 476 x 476)

A. 497
B. 4
C. 1449
D. 2

Answer: Option D

Explanation:

Given Exp. = (a + b)2 + (a - b)2 = 2(a2 + b2)
(a2 + b2) (a2 + b2)

= 2