Question

Ques..287 x 287
+ 269 x 269 - 2 x 287 x 269 =?​

Answer 1

287 x 287+ 269 x 269 - 2 x 287 x 269

=287^2-2 x 287 x 269+269^2

=(287-269)^2

=18^2

=325

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