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
Multiplying Radicals of the Same Root  Problem 1
Carl Horowitz
Carl Horowitz
University of Michigan
Runs his own tutoring company
Carl taught upperlevel math in several schools and currently runs his own tutoring company. He bets that no one can beat his love for intensive outdoor activities!
Distributing in a square root is exactly the same as distributing in any other number okay? Square root of 3 in this case is a number. It's not a good number you need to plug in the calculated figure at exactly what it is, but it's still just a number and it's on right.
So I think if we have like 2 times 3 plus x, we know that this 2 has to get distributed into both things, this goes into both, we end up with 6 plus 2x, that's easy enough. With a square root it's exactly the same idea. The square root on the outside is going to have to get distributed into both square roots on the inside.
So let's carry to this little example here and we just distribute this in, square root of 3 times the square root of 5, we have the same square roots, so we can combine it turns into square root of 15. Square root of 3 times the square root of 3, any time you're multiplying two square roots and they're the same thing, we just cancel the square roots and we end up with 3. Square root of 15 can't be simplified at all, there's no perfect squares that go into it, so by distributing in the term on the outside we were able to simplify this expression.
Please enter your name.
Are you sure you want to delete this comment?
Carl Horowitz
B.S. in Mathematics University of Michigan
He knows how to make difficult math concepts easy for everyone to understand. He speaks at a steady pace and his stepbystep explanations are easy to follow.
i love you you are the best, ive spent 3 hours trying to understand probability and this is making sense now finally”
BRIGHTSTORM IS A REVOLUTION !!!”
because of you i ve got a 100/100 in my test thanks”
Get Peer Support on User Forum
Peer helping is a great way to learn. Join your peers to ask & answer questions and share ideas.
Sample Problems (6)
Need help with a problem?
Watch expert teachers solve similar problems.

Multiplying Radicals of the Same Root
Problem 1 3,928 viewsMultiply:
√3(√5 + √3 
Multiplying Radicals of the Same Root
Problem 2 3,266 viewsMultiply:
(2 + √5)(3 − √2) 
Multiplying Radicals of the Same Root
Problem 3 534 views 
Multiplying Radicals of the Same Root
Problem 4 521 views 
Multiplying Radicals of the Same Root
Problem 5 504 views 
Multiplying Radicals of the Same Root
Problem 6 467 views
Comments (0)
Please Sign in or Sign up to add your comment.
·
Delete