SOLUTION: how do you simlify the radical expression of -3 times the square root of 120

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Question 553043: how do you simlify the radical expression of -3 times the square root of 120
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
You must first find the largest perfect square that is a factor of 120 in the square root sign. This would be 4, so break down the 120=4*30

-3%2Asqrt%28120%29
-3%2Asqrt%284%29%2Asqrt%2830%29
-3%2A2%2Asqrt%2830%29
-6%2Asqrt%2830%29

I have a REALLY good explanation of square roots on my website. You can find my website by use of the easy-to-remember and easy-to-spell link www.mathinlivingcolor.com. At the bottom of this page is a link that will take you to my FREE Homepage. Look near the top of this page for the link "Basic, Intermediate, and College Algebra: One Step at a Time", click on "Basic Algebra" and look in Chapter 5 for the section "5.01 Square Roots." I also have a FREE video of me teaching this topic (from my younger days before I retired!) Look on my Homepage for the link "Rapalje Videos in Living Color" and look in Basic Algebra for the one on Square Roots. My explanations should be a LOT easier to understand than the traditional textbooks you are probably using.

Happy New Year!! My Email address is rapaljer@seminolestate.edu if you need to contact me!!

Dr. Robert J. Rapalje, Retired
Seminole State College of Florida
Altamonte Springs Campus