SOLUTION: I don't know where to begin with this problem. can someone help me out?
Multiply. (11+3√3)(√11-3√3)
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Question 371872: I don't know where to begin with this problem. can someone help me out?
Multiply. (11+3√3)(√11-3√3)
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Multiply. (11+3√3)(√11-3√3)
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Use FOIL:
F: 11*sqrt(11)
O: 11*-3sqrt(3) = -33sqrt(3)
I: 3sqrt(3)*sqrt(11) = 3sqrt(33)
L: 3sqrt(3)*-3sqrt(3) = -9*3 = -27
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Combine those results to get:
-26+11Sqrt(11)-33sqrt(3)+3sqrt(33)
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Comment:
I have a sneaking suspicion that you problem
is (sqrt(11)+3sqrt(3))(sqrt(11)-3sqrt(3))
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If that is the case your answer is simply:
11-27 = -16
====================
Cheers,
Stan H.
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