Hidden Quadratics | 40 Worked Examples | Edexcel A-Level Maths

40 progressive Edexcel A-Level (9MA0) hidden quadratics questions with full mark-scheme style worked solutions.

What’s inside:
Easy: equations reducible to a quadratic by substitution, such as letting u = x^2 to solve ax^4 + bx^2 + c = 0.
Medium: exponential and index forms (for example e^(2x) and a^(2x) types) and surd substitutions.
Hard: trigonometric hidden quadratics, and questions combining the substitution with the discriminant or further manipulation.

Every solution shows every step, with M1 (method), A1 (accuracy) and B1 (independent) marks annotated at exactly the point each would be awarded. Typeset in LaTeX for clean mathematical notation.

Ideal for: Year 13 students sitting Edexcel A-Level Mathematics (9MA0) Paper 1 / Paper 2 Pure, plus tutors and teachers building targeted practice. Print-friendly, hand straight to students.