SOLUTION: Help!! What is the sq.root of 63 - 2sq.rt.of 28 + 5sq.rt. of 7?

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Question 85293: Help!!
What is the sq.root of 63 - 2sq.rt.of 28 + 5sq.rt. of 7?
Answer by ptaylor(2198) About Me  (Show Source):
You can put this solution on YOUR website!

sqrt%2863%29-2sqrt%2828%29%2B5sqrt%287%29 lets rewrite this bad boy as follows:
sqrt%287%2A9%29-2sqrt%287%2A4%29%2B5sqrt%287%29 and this equals:
3sqrt%287%29-4sqrt%287%29%2B5sqrt%287%29 adding it up , we get:
4sqrt%287%29---that shud about do it

Hope this helps----ptaylor