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 3 years ago
when do you and when do you not use FOIL for radical equations?
look at this video where the guy uses FOIL http://www.youtube.com/watch?v=LY8VBsLf4M
and for equations like √x+8=√3x+8 you would not use FOIL
why is this?
 3 years ago
when do you and when do you not use FOIL for radical equations? look at this video where the guy uses FOIL http://www.youtube.com/watch?v=LY8VBsLf4M and for equations like √x+8=√3x+8 you would not use FOIL why is this?

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slaaibak
 3 years ago
Best ResponseYou've already chosen the best response.0FOIL is used when two brackets should be multiplied with each other. This is not the case here. You would only need subtraction and division.

neverforgetvivistee
 3 years ago
Best ResponseYou've already chosen the best response.0you only need subtraction and division for what? are you saying that the guy shouldn't have used foil ?

Elekt
 3 years ago
Best ResponseYou've already chosen the best response.1No, he is saying that you only need that for your expression.

neverforgetvivistee
 3 years ago
Best ResponseYou've already chosen the best response.0thanks i get it i guess i'm just really sleepy right now no duh
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