SOLUTION: what is the square root of 63 minus the square root of 7?

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Question 840175: what is the square root of 63 minus the square root of 7?
Found 2 solutions by josh_jordan, ewatrrr:
Answer by josh_jordan(263) About Me  (Show Source):
You can put this solution on YOUR website!
To find your answer, you need to see if any of the radicals can be simplified. If you look at the sqrt%2863%29, you will notice that 9 x 7 = 63. Thus, sqrt%2863%29 can be reduced to 3%2Asqrt%287%29. Since both radicals are equal, we can now subtract sqrt%287%29 from 3%2Asqrt%287%29:

3%2Asqrt%287%29-sqrt%287%29 =

2%2Asqrt%287%29

Answer by ewatrrr(24785) About Me  (Show Source):