Question

Решите плес x^6+9x^3+8=0

Answer 1

Х^6 + 9х^3 + 8 = 0
Х^3 = а
а^2 + 9а + 8 = 0
D = 81 - 32 = 49 = 7^2?
a1 = ( - 9 + 7 ) : 2 = - 1
a2 = ( - 9 - 7 ) : 2 = - 8
X^3 = - 1 ==> X = - 1
X^3 = - 8 ==> X = - 2
Ответ ( - 1 ); ( - 2 )

Answer 2

Спасибо