fie ecuatia..........
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Răspuns:
Explicație pas cu pas:
x^4 - 625 = 0
x^4 - 25^2 = 0
(x^2 - 25)(x^2 + 25) = 0
(x - 5)(x + 5)(x^2 + 25) = 0
x^2 + 25 > 0
x - 5 = 0 ⇒ x = 5
x + 5 = 0 ⇒ x = -5