https://es-cl.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratic-functions-equations 2025-11-20T17:56:31.732617198Z Quadratic functions & equations We've seen linear and exponential functions, and now we're ready for quadratic functions. We'll explore how these functions and the parabolas they produce can be used to solve real-world problems. unit