In this lesson you'll learn how to add and subtract radical expressions. These expressions can only be added and subtracted if they have the same radicand, and index. We have learned rules on how to multiply or divide expressions with radicals. These follow the same rules of exponents, like the product, and the quotient rule. However, we need to be very careful when adding and subtracting, because we need to make sure that we are allowed to combine certain terms. Some radicals must be re-written before you can add or subtract them. This is done by simplifying the roots first.
*These practice questions are only helpful when you work on them offline on a piece of paper and then use the solution steps function to check your answer.
Adding & Subtracting Radicals
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.