Question

The value of (52)${}^2$ is:

Answer 1

(52)${}^2$ can be written as (50 + 2)${}^2$.
Using the identity, (a+b)${}^2$ = (a)${}^2$+2ab+(b)${}^2$,
(50 + 2)${}^2$ = (50)${}^2$+2(2)(50)+(2)${}^2$ = 2704.