https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratic-functions-equations/x2f8bb11595b61c86:standard-form-quadratic/v/ex3-completing-the-square 2021-06-30T17:32:40Z Finding the vertex of a parabola in standard form Sal rewrites the equation y=-5x^2-20x+15 in vertex form (by completing the square) in order to identify the vertex of the corresponding parabola. Sal Khan video https://cdn.kastatic.org/googleusercontent/wigSts0--ntP7W8-W5pW-wvBMuV6nwqB7t0bYBb0q7mTKETAJtsDEsZMGzGvwVqvw7zYQxHm1k9BRxBT8e0iTMtd Finding the vertex of a parabola in standard form Sal rewrites the equation y=-5x^2-20x+15 in vertex form (by completing the square) in order to identify the vertex of the corresponding parabola. https://cdn.kastatic.org/ka-youtube-converted/IbI-l7mbKO4.mp4/IbI-l7mbKO4.mp4 340 Quadratic standard form https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratic-functions-equations/x2f8bb11595b61c86:standard-form-quadratic/v/graphing-a-parabola-using-roots-and-vertex 2021-06-30T17:32:35Z Graphing quadratics: standard form Learn how to graph any quadratic function that is given in standard form. Here, Sal graphs y=5x²-20x+15. Sal Khan video https://cdn.kastatic.org/googleusercontent/cRCnKKAjKKn3-iOi2QgaDA6zvAPnzjaC2vxXEMkYLqSqmBOmYKhQS4-c8xgz_MWVN15PIZlWRUOunkPSX74kvrAviw Graphing quadratics: standard form Learn how to graph any quadratic function that is given in standard form. Here, Sal graphs y=5x²-20x+15. https://cdn.kastatic.org/ka-youtube-converted/MQtsRYPx3v0.mp4/MQtsRYPx3v0.mp4 281 Quadratic standard form https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratic-functions-equations/x2f8bb11595b61c86:standard-form-quadratic/e/graphing_parabolas_0.5 2026-03-24T23:41:07.080866137Z Graph quadratics in standard form Graph quadratic functions given in the standard form ax²+bx+c. For example, graph y=5x²-20x+15. Sid Patel exercise