x⁴-4=0
(x²-2)(x²+2)=0
(x-√2)(x+√2)(x²+2)=0
x₁=√2
x₂=-√2
Równanie ma dwa rozwiązania
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x⁴-4=0
(x²-2)(x²+2)=0
(x-√2)(x+√2)(x²+2)=0
x₁=√2
x₂=-√2
Równanie ma dwa rozwiązania