This series will help you master the full unit of [Polynomial Arithmetic](https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:poly-arithmetic) in Khan Academy's Algebra 2 course. You will go through Khan Academy skills and quizzes, culminating with you taking the final Unit Test and earning a Schoolhouse certification!

This series will help you master the full unit of [Trigonometry](https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:trig) in Khan Academy's Algebra 2 course. You will go through Khan Academy skills and quizzes, culminating with you taking the final Unit Test and earning a Schoolhouse certification!