Question 118077
(square root of 3 + 5)(square root of 3 - 3)
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(sqrt3 + 5)(sqrt3 - 3)
Use FOIL:
F: sqrt3*sqrt3 = 3
O: -3sqrt3
I:  5sqrt3
L: -3*5=-15
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Combine to get:
= -12+2sqrt(3)
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Cheers,
Stan H.