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Биквадратные уравнения

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  • х^4 + х^2 — 2 = 0
  • х^4 — 8х^2 + 20 = 0
  • 9х^4 + 8х^2 — 1 = 0
  • х^4 — 26х^2 + 25 = 0
  • х^4 — 9х^2 = 0
  • х^4 — 3х^2 — 4 = 0
  • 2х^4 + 5х^2 = 0
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