This is a unit bundle of handouts/worksheets that can be used as notes/lessons, most likely for an Algebra 2 course, on Quadratic equations. Solving quadratic equations by factoring, completing the square, and the Quadratic Formula are included. An application on completing the square in which students convert the equation of a circle from standard form to center-radius form is included. A lesson on some applications of using the Quadratic Formula is included. Then, the nature of the roots of a quadratic from the discriminant is analyzed. Students find the sum and product of the roots of a quadratic and also use the roots to go backward and write the equation of the quadratic. Students then solve algebraic quadratic-linear systems. The unit concludes with a lesson on basic quadratic inequalities in one variable.