Question 182831This question is from textbook saxon algebra 2
: 3 over square root 7 - square root 2
simplify. The 3 on top confuses me.
This question is from textbook saxon algebra 2
Answer by rapaljer(4671)   (Show Source):
You can put this solution on YOUR website! Do you mean  ???
If so, then the trick is to multiply numerator and denominator times the same thing as the denominator but with the opposite sign in the middle. This is called the "conjugate" of the denominator. In other words multiply numerator and denominator times  . It looks like this:
When you multiply out the denominator you get
 .
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R^2
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