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Solve $8x^6 + 215x^3 - 27 = 0$.
Mathematics 9709 · AS & A Level · Quadratics
Quadratics — practice question
Worked solution & mark scheme
This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Factorisation or an appropriate substitution used to solve $8x^6+215x^3-27=0$” …
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