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![CA Algebra I: Quadratic equation | Quadratic odds and ends | Khan Academy](https://www.iarticlesnet.com/pub/img/site/s_04.jpeg)
CA Algebra I: Quadratic equation | Quadratic odds and ends | Khan Academy
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日期:2024-07-21
53-57, Quadratic Equation ... PS: ^2 means squared (to the second). Completing the square means that you add a number onto a quadratic equation so you can factor it into a perfect square, like (x-9)^2....看更多