Quadratics
Factorising by Sum and Product (Part 2)
Quadratics
Factorising when A = 0 Factorising when A ≠ 0 Factorising special situations
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Solving quadratic equations
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When factorising quadratic trinomials where a=1, we can use a process known as the sum and product method, where we look for a pair of numbers with a sum of the coefficient of x, and a product of the constant. However, sometimes there is a common factor that may need to be removed first to make a=1.