Mathematics 9709 · AS & A Level · Quadratics

Quadratics — practice question

(main)[4]

Use an appropriate substitution to solve the equation $(2x - 3)^2 - \dfrac{4}{(2x - 3)^2} - 3 = 0$.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Let $u = 2x - 3$, which gives $u^4 - 3u^2 - 4 = 0$” …

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