Question 195936
(5+sqrt5)+(2-sqrt3)
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7 +sqrt5 -sqrt3
.
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If  problem  is  
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(5 +sqrt5)  *  (2-sqrt3)
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use  F O I L
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5*2 -5sqrt3 +2 sqrt5 -sqrt3 sqrt5
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10 +2sqrt5 -5sqrt3 -sqrt3sqrt5
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10 +2sqrt5 -sqrt3(5 +sqrt5),,,,answer
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checking
using  calculator,,  original  =  1.94,,,,,answer  =  1.94