Quadratics
Solution by Completing the Square
Quadratics
Factorising when A = 0 Factorising when A ≠ 0 Factorising special situations
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Solving quadratic equations
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Factorising quadratic expressions can be very difficult, especially when the solutions become irrational numbers. Quadratics with irrational solutions cannot be easily solved by factorisation, so instead a method called solution by completing the square can be used.