https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratic-functions-equations/x2f8bb11595b61c86:completing-square-quadratics/v/ex1-completing-the-square 2021-06-30T17:32:40Z Worked example: Completing the square (intro) Sal completes x²-44x into a perfect square. Sal Khan video https://cdn.kastatic.org/googleusercontent/02Zup7B5Tm4ksL9AcJ9c6zpWztcA11VJoDoCrYYThds7Sa4XD03-k4b6M-tlGwkLO1GiBVkWrFph89YfEAAY0-U Worked example: Completing the square (intro) Sal completes x²-44x into a perfect square. https://cdn.kastatic.org/ka-youtube-converted/VvuuRpJbbHE.mp4/VvuuRpJbbHE.mp4 202 Solving expressions by Completing the square https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratic-functions-equations/x2f8bb11595b61c86:completing-square-quadratics/e/completing_the_square_in_quadratic_expressions 2025-12-28T12:18:45.238308434Z Completing the square (intro) Practice the method of completing the square with quadratic expressions. Tomer Gal exercise https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratic-functions-equations/x2f8bb11595b61c86:completing-square-quadratics/v/rewriting-quadratics-as-perfect-squares 2022-10-06T23:01:00.745424633Z Worked example: Rewriting expressions by completing the square Sal rewrites x²+16x+9 as (x+8)²-55 by completing the square. video https://cdn.kastatic.org/ka_thumbnails_cache/fb1361a3-e313-443f-a548-d7862af784e0_1280_720_base.png Worked example: Rewriting expressions by completing the square Sal rewrites x²+16x+9 as (x+8)²-55 by completing the square. https://cdn.kastatic.org/ka-youtube-converted/sh-MP-dVhD4.mp4/sh-MP-dVhD4.mp4 182 Solving expressions by Completing the square https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratic-functions-equations/x2f8bb11595b61c86:completing-square-quadratics/e/completing_the_square_1 2026-01-08T04:41:12.004642433Z Completing the square (intermediate) Solve quadratic equations of the form x^2+bx+c by completing the square. Tomer Gal exercise