1.

Simplify : 387 x 387 + 114 x 114 + 2 x 387 x 114

Answer»

Given exp 

= (387)2 + (114)2 + (2 x 387 x 114) 

= a2 + b2 + 2ab, where a = 387,b = 114 

= (a+b)2 

= (387 + 114 )2 

= (501)2 

= 251001.


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