Worked example: Solving equations by completing the square | High School Math | Khan Academy
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Sal solves x²-2x-8=0 by rewriting the equation as (x-1)²-9=0 (which is done by completing the square!). Watch the next lesson: https://www.khanacademy.org/math/high-school-math/math2/math2-quadratics/math2-completing-the-square/v/completing-the-square-to-solve-quadratic-equations?utm_source=YT&utm_medium=Desc&utm_campaign=highschoolmath ...
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