Search results
Results From The WOW.Com Content Network
There are two keys to combining radicals by addition or subtraction: look at the index, and look at the radicand. If these are the same, then addition and subtraction are possible. If not, then you cannot combine the two radicals. Making sense of a string of radicals may be difficult.
Add and subtract terms that contain like radicals just as you do like terms. If the index and radicand are exactly the same, then the radicals are similar and can be combined. This involves adding or subtracting only the coefficients; the radical part remains the same.
Simplifying radical expressions (addition) A worked example of simplifying an expression that is a sum of several radicals. In this example, we simplify √ (2x²)+4√8+3√ (2x²)+√8. Created by Sal Khan and Monterey Institute for Technology and Education.
Math lesson for adding and subtracting radical expressions with examples, solutions and exercises.
Add and Subtract Radical Expressions. Adding radical expressions with the same index and the same radicand is just like adding like terms. We call radicals with the same index and the same radicand like radicals to remind us they work the same as like terms.
Understand how to combine radical expressions, the same way you add or subtract like terms. The goal is to combine the coefficients of the terms having the same square-root part.
Recognize when a radical expression can be simplified either before or after addition or subtraction. There are two keys to combining radicals by addition or subtraction: look at the index, and look at the radicand. If these are the same, then addition and subtraction are possible. If not, then you cannot combine the two radicals.