A 2 2ab b 2 9 July 8, 2019 16 32 64 128 A 2 2ab b 2 9c 2 A 2 2ab b 2 9x 2 A 2 2ab b 2 9c 2 factorise A 2 2ab b 2 x 2 6x 9 9 a 2 2ab b 2 factorise A 2 2ab b 2 c 2 6c 9 4x2 9 12x a 2 b 2 2ab
