Respuesta :

Answer:

x = -2   or   x = -1/3   or   x = 1/3

Step-by-step explanation:

9x³ + 18x² - x - 2​ = 0

9x²(x+2) - (x+2) = 0

(x+2)(9x²-1)=0

(x+2)(3x+1)(3x-1)=0

x = -2   or   x = -1/3   or   x = 1/3

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