As you might suspect, you can only add or subtract square root terms that are "like". With square roots "like" means the radicands are a perfect match. It's common for square root terms to not look alike until after you've simplified som or all of the terms. In Today's videos you'll use your previous work to simplify square root terms and then you'll add and subtract any like terms. This material is covered on pages 281-286 in the Engaging Algebra textbook.
6.5 Adding and Subtracting Square Roots
After completing these videos you'll be able to simplify square root terms and then add and subtract any like terms.