Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Adding and Subtracting Polynomials
Twenty-five problems present a variety of problems adding and subtracting polynomials. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution"...
Khan Academy
Khan Academy: Algebra: Arithmetic With Polynomials and Rational Expressions
Understand that polynomials form a system analogous to the integers, namely, they are closed under the operations of addition, subtraction, and multiplication i.e. one can add, subtract, and multiply polynomials.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Add and Subtract Polynomials
Find a quick, concise explanation of how to add and subtract polynomials. Step by step example is included to help you understand how to use the distributive property to find the sum or difference.