Hiii!!!here's ur ANSWER...>> ( a + b + C )² = a² + b² + c² + 2ab + 2BC + 2acfor example :-( 2 + 4 + 6 )²here a = 2, b = 4 and c = 6>> (2)² + (4)² + (6)² + 2 (2) (4) + 2 (4) (6) + 2 (2) (6)= 4 + 16 + 36 + 16 + 48 + 24= 144hope this helps..!!
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