А)Х (1/4)
У(-3/12)
Б)аналогично
{ X² > 9
{ X - 4 < 0
{ X² - 9 > 0
{ X < 4
{ (X-3)(Х+3) > 0
{ X < 4
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Ответ: ( - ∞ ; - 3) ∨ ( 3 ; 4)
(Х³ + 8)(Х⁶ - 3) = 0
Х³ + 8 = 0 ∨ Х⁶ - 3 = 0
Х³ = - 8 ∨ Х⁶ = 3
Х = - 2 ∨ Х = ±⁶ √3
Ответ: - 2 ; ± ⁶ √3