Khan Academy: Adding & Subtracting Matrices

Learn how to find the result of matrix addition and subtraction operations.

Sal demonstrates adding and subtracting rational expressions with like denominators. [3:44]

Sal shows how to add vectors by adding their components, then explains the intuition behind adding vectors using a graph.

Sal adds 6/(2x^2-7) + (-3x-8)/(2x^2-7) and subtracts (9x^2+3)/(14x^2-9) - (-3x^2+5)/(14x^2-9).

Discover the procedure to add and subtract matrices. Pupils use the interactive and discover the pattern in adding and subtracting matrices. Scholars adjust the entries in the addends and see the resulting changes in the sum. They also...

Find the matrix that is the result of the addition or subtraction of two given matrices. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Have you learned the basics of rational expression addition/subtraction? Great! Now dig deeper with some advanced examples.

Adding and subtracting polynomials is all about combining like terms. When the terms have two variables, it gets a little bit tricky to figure out which terms are like terms. In this article, we review some examples and give you a chance...

Adding and subtracting polynomials is all about combining like terms. In this article, we review some examples and give you a chance for you to practice the skill yourself.

[Free Registration/Login may be required to access all resource tools.] This lesson covers adding and subtracting matrices with the same dimensions. Students can watch a video tutorial, explore guided notes and then attempt practice...