Mathematics 0580 · IGCSE · Algebraic manipulation

Algebraic manipulation — practice question

(main)[3]

The expression $2x^2 + 12x - 2$ may be expressed in the form $a(x + b)^2 - c$. Find the values of $a$, $b$ and $c$.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$a=2$, $b=3$, and $c=20$” …

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI