Mathematics 4024 · O Level · Algebraic manipulation

Algebraic manipulation — practice question

(a)[1]

Factorise the expression $25t^2-4$.

(b)[2]

Factorise the expression $x^2-6x-3xy+18y$.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The factorised form is $(5t-2)(5t+2)$.” …

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