x⁴ - 2x² - 3 = 0
(x² - 3)(x² + 1) = 0
x² + 1 ≠ 0
x² - 3 = 0
x² = 3
x₁ = √3 x₂ = - √3
Ответ : √3 ; - √3
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x⁴ - 2x² - 3 = 0
(x² - 3)(x² + 1) = 0
x² + 1 ≠ 0
x² - 3 = 0
x² = 3
x₁ = √3 x₂ = - √3
Ответ : √3 ; - √3