Question 433867
(2 sqrt 6 - 4 sqrt 5) (3 sqrt 6 + 6 sqrt 5) 
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Use FOIL:
F: 6*6 = 36
O: 12sqrt(30)
I: -12sqrt(30)
L: -24*5 = -120
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Combine to get the answer:
Ans: -84
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Cheers,
Stan H.
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