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Find $x$ as the subject in the formula $y = ax^2 + b$.
Mathematics 0580 · IGCSE · Algebraic manipulation
Algebraic manipulation — practice question
Worked solution & mark scheme
This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “M1 for accurate subtraction to leave the $x^2$ term on its own” …
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