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  1. (A+B)2
 Aug 8, 2017
 #1
avatar+349 
+1

2A+2B?

 Aug 8, 2017
 #2
avatar+118673 
+1

I think the question is supposed to be

 

\((A+B)^2=A^2+2AB+B^2\)

 Aug 8, 2017

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