Задача 36631 Решите уравнение x^4 = 1/81...

vk280770680

2019-05-01 10:12:09

Решите уравнение x^4 = 1/81

sova

2019-05-01 10:35:50

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x^4-(1/3)^4=0
(x^2-(1/3)^2)*(x^2+(1/3)^2)=0
(x-(1/3))*(x+(1/3))*(x^2+(1/9))=0

x-(1/3)=0 или x+(1/3)=0

[b]x=1/3[/b] или [b] x=-1/3[/b]