3
23
7
-4
Correct answer is D
1√3−2 - 1√3+2 L.C.M = (3- 2) (3 + 2) ∴ 1√3−2 - 1√3−2 = √3+2−√3−2√3−2+√3−2 √3+2−√3+23−2√3+2√3−4 = 43−2 = 4−1 = -4
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