Ответ:
_(2d^2)_
(d-1)
Пошаговое объяснение:
3d^2-1/d-1 - d - 1 = 3d^2-[(d-1)(d+1)]/d-1 = (3d^2-1 - d^2+1)/d-1 = 2d^2/d-1
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Ответ:
_(2d^2)_
(d-1)
Пошаговое объяснение:
3d^2-1/d-1 - d - 1 = 3d^2-[(d-1)(d+1)]/d-1 = (3d^2-1 - d^2+1)/d-1 = 2d^2/d-1