SOLUTION: Simplify by combining like terms sqrt(63)-2sqrt(28)+5 sqrt (7)

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Question 99472: Simplify by combining like terms
sqrt(63)-2sqrt(28)+5 sqrt (7)
Answer by elima(1433) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%2863%29-2sqrt%2828%29%2B5sqrt%287%29
sqrt%289%2A7%29-2sqrt%284%2A7%29%2B5sqrt%287%29
3sqrt%287%29-2%2A2sqrt%287%29%2B5sqrt%287%29
3sqrt%287%29-4sqrt%287%29%2B5sqrt%287%29
like terms are now collected so you can add and subtract as needed:
4sqrt%287%29
:)