Explore the world of quadratic functions and expressions in this comprehensive 2.5-hour tutorial. Learn about general form and vocabulary, transformations in vertex form, and standard form of quadratic functions. Master factoring techniques for quadratic expressions with various lead coefficients, including the slide and divide method. Delve into special case polynomials, the zero product property, and solving quadratic equations. Conclude by tackling systems of equations involving quadratic functions through graphing methods.