Like what you saw?
Create FREE Account and:
 Watch all FREE content in 21 subjects(388 videos for 23 hours)
 FREE advice on how to get better grades at school from an expert
 Attend and watch FREE live webinar on useful topics
Adding and Subtracting Radical Expressions  Problem 9
Alissa Fong
Alissa Fong
MA, Stanford University
Teaching in the San Francisco Bay Area
Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts
Two radicals can be added if and only if they have the same number/variable(s) under the square root or radicand. Often, you will need to simplify radicals first in order to tell if they can be combined. Here, we simplify radicals and multiply by coefficients out front to see if we have "like radicands" that can be combined. The numbers outside the square roots will be added/subtracted, and the number inside the root will remain unchanged.
Transcript Coming Soon!
Please enter your name.
Are you sure you want to delete this comment?
Alissa Fong
M.A. in Secondary Mathematics, Stanford University
B.S., Stanford University
Alissa has a quirky sense of humor and a relatable personality that make it easy for students to pay attention and understand the material. She has all the math tips and tricks students are looking for.
Your tutorials are good and you have a personality as well. I hope you have more advanced college level stuff, because I like the way you teach.”
Thanks alot for such great lectures... I never found learning this easier ever before... keep up the great work.... :)”
You seem so kind, it's awesome. Easier to learn from people who seem to be rooting for ya!' thanks”
Sample Problems (9)
Need help with a problem?
Watch expert teachers solve similar problems.

Adding and Subtracting Radical Expressions
Problem 1 9,951 viewsSimplify:
8√3 − 5√3 + 10√3 
Adding and Subtracting Radical Expressions
Problem 2 8,587 viewsSimplify:
4√5 − 3√45 + 10√80 
Adding and Subtracting Radical Expressions
Problem 3 7,004 viewsSimplify:
√125x + 4√20x − 3√45x 
Adding and Subtracting Radical Expressions
Problem 4 6,213 viewsSimplify:
3√x + y√x + 2√y²x 
Adding and Subtracting Radical Expressions
Problem 5 905 views 
Adding and Subtracting Radical Expressions
Problem 6 1,158 views 
Adding and Subtracting Radical Expressions
Problem 7 721 views 
Adding and Subtracting Radical Expressions
Problem 8 591 views 
Adding and Subtracting Radical Expressions
Problem 9 577 views
Comments (0)
Please Sign in or Sign up to add your comment.
·
Delete