Mathematics 0580 · IGCSE · Algebraic manipulation

Algebraic manipulation — practice question

The formula can be written as $p = 4r - 3t$.

(a(i))[2]

Calculate $p$.

(a(ii))[2]

Make $r$ the subject in the formula $p = 4r - 3t$.

(b)[2]

Expand the brackets, then simplify: $4(3x - 2) - 3(x - 5)$

(c)[2]

Factorise completely $12ab - 20a^2$.

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The answer is $38$.” …