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= 2√3-3/4-3
= 2√3-3/1 = 2√3-3 (A)
14. (2-√3/2+√3) x (2-√3/2-√3) = (2-√3.2-√3)/(2+√3.2-√3)
= 4-2√3-2√3+3/4-3
= 4-4√3+3/1
= 7-4√3 (C)