SOLUTION: x sqrt 18 - 3 sqrt 8x^2
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Question 76629: x sqrt 18 - 3 sqrt 8x^2
Answer by stargrl12566(16) (Show Source): You can put this solution on YOUR website!
you split up the square roots into 2 mutliples, one being able to have to square root taken.
x(sqrt2 times sqrt9) - 3(sqrt2 times sqrt4x^2)
3x(sqrt2) - 3(2x)(sqrt2)
3x(sqrt2) - 6x(sqrt2)
subtract
-3x sqrt2
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