Решите пж!!10 баллов............

Question

Решите пж!!10 баллов

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Answer 1

2/(3√5+1) - 2/(3√5-1) = (2(3√5-1)-2(3√5+1))/((3√5+1)(3√5-1)) = (6√5-2-6√5-2)/((3√5)²-1²) = -4/(45-1) = - 4/44 = -1/11