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[3(√3-2) + 3(√3+2)] / [(√3+2) × (√3-2)] + 3(√3+1) / [(√3-1)×(√3+1)] =
(3√3 - 6 + 3√3 + 6) / [(√3)² - 2²)] + 3(√3+1) / [(√3)²-1²)] =
6√3 / (3 - 4) + 3(√3+1) / (3 - 1) =
-6√3 + 1,5(√3+1) =
-6√3 + 1,5√3 + 1,5 =
-4,5√3 + 1,5
Odp.
-4,5√3 + 1,5