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# Solving Quadratic Equations

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Tweet## Clarissa Smythe

on 9 January 2013#### Transcript of Solving Quadratic Equations

Solving Quadratic Equations What is a quadratic equation? An equation where the highest exponent of the variable (usually 'x') is squared, it is usually written as: a b c Why do we use the quadratic equation? The quadratic equation is used to find where a curve crosses the x axis on a Cartesian grid. Where might we use this in real life? What does it mean to solve a quadratic equation? Solving a quadratic equation means finding the 'x' values that make the equation true. These 'x' values are called roots of the quadratic. Factorising Using the quadratic formula Completing the square Solving quadratic equations by Factorising and Solving quadratic equations by using the quadratic formula What is the quadratic formula? Solving quadratic equations by completing the square Deriving the quadratic formula by completing the square Discriminant http://www.mathsisfun.com/definitions/quadratic-equation.html

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Full transcripthttp://www.mathworksheetscenter.com/mathtips/quadraticequation.html

http://www.mathworksheetscenter.com/mathtips/quadraticequation.html http://www.mathworksheetscenter.com/mathtips/quadraticequation.html http://www.teacherschoice.com.au/maths_library/algebra/alg_6.htm

http://www.purplemath.com/modules/sqrquad2.htm http://www.purplemath.com/modules/sqrquad2.htm http://www.purplemath.com/modules/sqrquad2.htm http://revisesmart.co.uk/maths/core-1/solving-quadratic-equations.html