A b 2 a b 2 identity July 8, 2019 16 32 64 128 A 2 b 2 )(- a 2 b 2 using identity A 2 b 2 identity formula A 2 b 2 identity proof Prove the identity a b 2 a 2 b 2 2ab Verify algebraic identity a b 2 a 2 b 2 2ab ( a+b)2