Предмет: Математика, автор: DirtyMind

ПОЖАЛУЙСТА!!!РЕШИТЕ УРАВНЕНИЕ
1/х^2 + 4/х - 12 = 0

Ответы

Автор ответа: DejavuP
0
Приведём всё к общему знаменателю, тогда получится 1 + 4x - 12x² / x² = 0, x² не равен 0
-12x² + 4x + 1 = 0 ║ * (-1)
12x²-4x-1 = 0
D = (-4)²-4*12*(-1) = 16 + 48 = 64
x1 = 4 + 8 / 24 = 0.5 (уд.)
x2 = 4 - 8 / 24 = 0.16 (не уд., бесконечная период. дробь)
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