SOLUTION: Simplify. (9+sqrt=5)(9-sqrt=5)

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Question 96730: Simplify.
(9+sqrt=5)(9-sqrt=5)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
%289%2Bsqrt%285%29%29%289-sqrt%285%29%29 Start with the given expression


81%2B9%2Asqrt%285%29-9%2Asqrt%285%29%2Bsqrt%285%29sqrt%285%29 Foil


81%2B9%2Asqrt%285%29-9%2Asqrt%285%29%2B5 Multiply


81%2Bcross%289%2Asqrt%285%29-9%2Asqrt%285%29%29%2B5 Cancel out like terms

86 Combine like terms