SOLUTION: 3/1-√7 please simplify radical expression

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Question 169609: 3/1-√7
please simplify radical expression
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
3%2F%281-sqrt%287%29%29 multiply top and bottom by 1%2Bsqrt%287%29
:
3%281%2Bsqrt%287%29%29%2F%281-7%29
:
-%281%2Bsqrt%287%29%29%2F2