Example of solving a quadratic equation by: Factorising Step-by-step guide: Solving quadratic equations by factorising 2Quadratic Formula \[\begin{aligned} x^{2}+4x-5&=0\\ \\ x&=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\
Quadratic equations can be solved by a process known in American English as factoring and in other varieties of English as factorising, by completing the square, by using the quadratic formula, or by graphing." [Quadratic equation. Wikipedia] The flowchart example "Solving quadratic equation ...
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it will depend on your age and maths set as to how many of these you need to know, but here are the three ways which we can solve quadratic equations: 1. Factorising 2. Using the Quadratic Formula 3. Completing the Square Which ever way you choose (or are told to do!), you must ...
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This is a case study investigating ten Year 11 repeating students' strategies in solving three selected sub-topics in algebra; changing the subject of a given formula, factorising quadratic expressions and solving quadratic equations using quadratic formula. Specifically, students' error patterns in ...
For quadratic equations that cannot be solved by factorising, we use a method which can solve ALL quadratic equations called completing the square. We use this later when studying circles in plane analytic geometry.Completing the square comes from considering the special formulas that we met in ...
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