SOLUTION: Simplify by combining like terms. √63-√7

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Question 773677: Simplify by combining like terms. √63-√7
Answer by ramkikk66(644) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%2863%29+-+sqrt%287%29 =
sqrt%289%2A7%29+-+sqrt%287%29 =
sqrt%289%29%2Asqrt%287%29+-+sqrt%287%29 =
sqrt%287%29%2A%28sqrt%289%29-+1%29 ----> combining like terms
sqrt%287%29%2A%283+-+1%29
= 2%2Asqrt%287%29
:)