SOLUTION: (8-sqrt10)(5-sqrt10)=?? it says to simplify? thanks for your help

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Question 635382: (8-sqrt10)(5-sqrt10)=?? it says to simplify? thanks for your help
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

%288-sqrt%2810%29%29%285-sqrt%2810%29%29 = 40-13sqrt%2810%29+%2B+10+=+50-13sqrt%2810%29+

F	First terms   40

O	Outside terms -8sqrt%2810%29

I	Inside terms  -5sqrt%2810%29

L	Last terms    10