Solving quadratic equations by completing the square
Lesson 5 / 20
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Lesson outcome
I can solve quadratic equations algebraically by completing the square.
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There are other methods to find the solutions of a quadratic equation.
One of these methods is called completing the square.
By representing this with a model, you can see why it has this name.
Completing the square is useful when the quadratic cannot be easily factorised.
The square root of a number can be positive or negative.
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