Khan Academy
Khan Academy: Equations With Two Rational Expressions
Solve advanced rational equations with multiple expressions. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Algebra: Two Step Equations and Properties of Equality
[Free Registration/Login may be required to access all resource tools.] Learn how to solve two-step equations using the properties of equality. Tutorial includes video, lots of examples, and a set of review questions for practice or...
CK-12 Foundation
Ck 12: Algebra: The Quadratic Formula: Deriving and Using the Quadratic Formula
[Free Registration/Login may be required to access all resource tools.] This lesson covers deriving the quadratic formula and using it to solve any quadratic equation.