SOLUTION: Simplify. x times the square root of 18 - 3 times the square root of 8x squared (square root of 3 + 5)(square root of 3 - 3)

Algebra ->  Square-cubic-other-roots -> SOLUTION: Simplify. x times the square root of 18 - 3 times the square root of 8x squared (square root of 3 + 5)(square root of 3 - 3)      Log On


   

Question 118077: Simplify.
x times the square root of 18 - 3 times the square root of 8x squared

(square root of 3 + 5)(square root of 3 - 3)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
(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.