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Matematika
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1. Jawaban Anonyme
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3 / (2 + √3) + 3 /(2 - √3) =
= 3 {1/(2+ √3) + 1/ (2 - √3)}
= 3 ( 2 -√3 + 2 + √3) / (4 -3)
= 3 (4)/(1)
= 12