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2*sqrt(27) - sqrt(3) = 2*sqrt(9*3) - sqrt(3) = 2*sqrt(9)*sqrt(3) - sqrt(3)

= 2*3*sqrt(3) - sqrt(3) - 6*sqrt(3) - srt(3) = 5*sqrt(3)

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Q: Simplify these surds 2 rt 27 - rt 3?
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