A b b 2 July 8, 2019 16 32 64 128 A b b 2 formula A b 2 b c A b 2 b 1 A b )( ab )+ b 2 A b 2 a b 2 is equal to A b 2 a b 2 identity A b 2 2ab b 2 A b 2 a b 2 answer А б 2 а б 2