IGCSE Mathematics Core C2.2.3 Factorise by extracting common factors Question Bank

• Factorise by extracting common factors. Simplify means give the answer in its simplest form, e.g. 2a + 3b + 5a – 9b = 7a – 6b. e.g. expand 3x(2x – 4y). Includes products of two brackets involving one variable, e.g. expand (2x + 1)(x – 4). Factorise means factorise fully, e.g. 9x2 + 15xy = 3x(3x + 5y).