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How to solve a quadratic equation by completing the square




 
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More Lessons for A Level Maths

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Videos, activities and worksheets that are suitable for A Level Maths.

What is Completing the Square?
Completing the square is a process to convert a quadratic equation from
the general form y = ax2 + bx + c
to the vertex form y = a(x - h)2 + k
The vertex form can be used to find the vertex of a quadratic equation and to solve a quadratic equation.

Completing the Square (Tutorial 1)
Completing the Square (Tutorial 2)



Completing the Square (Tutorial 3)
How to Solve a Quadratic Equation by Completing the Square


 

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.


You can use the free Mathway widget below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.


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