3x4-8x2-3=0 quadratic equation

Question

3x4-8x2-3=0 quadratic equation

Answer 1

Биквадратное уравнение))

Пусть x^2 = t, тогда 3t^2 - 8t - 3 = 0
D= 64 + 36 = 100
x1 = (8-10)/6 = - 1/3
x2 = (8+10)/6 = 18/6 = 3

x^2 = 3 ==> x = ± √3

ОТВЕТ:
x = ± √3

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