Multiplying radicals is very easy, if you remember how to use the FOIL method. It’s like FOILing any other number, except you have to be careful with the square roots involved. If you don’t remember what FOIL stands for, here is a quick review
F: first # x first #
O: outside # x outside #
I: inner # x inner #
L: last # x last #
The three steps to multiplying radicals are as follows:
Distribute/FOIL the numbers in order to get rid of the parenthesis
Make sure all square roots are solved
Combine like terms
Click on this link to see our video about distributing radicals:
Distributing and FOILing Radicals!
with Gloria Veneziale and Natalia TorresMultiplying radicals is very easy, if you remember how to use the FOIL method. It’s like FOILing any other number, except you have to be careful with the square roots involved. If you don’t remember what FOIL stands for, here is a quick review
F: first # x first #
O: outside # x outside #
I: inner # x inner #
L: last # x last #
The three steps to multiplying radicals are as follows:
Distribute/FOIL the numbers in order to get rid of the parenthesis
Make sure all square roots are solved
Combine like terms
Click on this link to see our video about distributing radicals:
http://www.pascack.k12.nj.us/Page/613 (Click on Multiplying Radicals with Gloria and Natalia)
If you want some more practice with these even AFTER watching our video, you can visit supergenius99, themathpage, or the mathportal.