Question

Please evaluate the following

Answer 1

STEP BY STEP EXPLANATION::

= 313×313+287×287

=(313)^2+(28)^2

=(300+13)^2+(300-13)^2

=2(300^2+13^2) SINCE,(a+b)^2+(a-b)^2=2(a^2+b^2)

= 2(90000+169)

= 180000+338

=180338 :: answer