2.2: Quadratic Equations Last updated Save as PDF Page ID 94016 Holly Carley and Ariane Masuda New York City College of Technology 2.2.1: Solving Quadratic Equations Using the Zero-Product Property 2.2.2: Solving Quadratic Equations Using the Square Root Property 2.2.3: Solving Quadratic Equations by Completing the Square 2.2.4: Solving Quadratic Equations Using the Quadratic Formula 2.2.5: Applications of Quadratic Equations Thumbnail: Plot of the quadratic function. (Public Domain; N.Mori).