Unit 4 - Objective 5 - Addition and Subtraction of Radicals
Quick Review

Adding and subtracting radical terms is like adding and subtracting LIKE terms. To be a LIKE term, the expressions under the radical and the root must be exactly the same.
Like adding 2w + 4w = 6w, both of these terms have a w. Both of the former have cube (3rd) roots with a 5 underneath.

If the radicals are not LIKE terms, they can not be combined. The root as well as the expression underneath must be the same to be LIKE terms.


Simplify all radicals first, then combine LIKE terms.


  1. (like combining 6x - 5y - 4x)

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