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.... jawaban : D
2√27 - 5√12 + √75 = 2√9 .√3 - 5 .√4 .√3 + √25 .√3
= 2. 3√3 - 5 .2√3 + 5√3
= 6√3 - 10√3 + 5√3
= √3 ...... jawaban : A