Mathematics 0580 · IGCSE · Algebraic manipulation
Simplify $6a + 4b - a - 5b$.
Factorise $6x + 15y$.
Factorise $x^2y - 5xy$.
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The simplified expression is $5a-b$.” …