Evaluate (2√3 - 4) (2√3 + 4)
-4
-2
2
4
Correct answer is A
2√3 - 4) ( 2√3 + 4) = 12 + 8√3 - 8√3 – 16 = 12 – 16 = -4 The two expressions in the bracket are conjugate of each other
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