Answer :

3x^2+6x^2-4x-8 = 3x^2(x + 2) - 2(x + 2) = (x + 2)( 3x^2 - 2) = 3(x+2)(x - [tex] \sqrt{6} /3)[/tex])(x + [tex] \sqrt{6} /3)[/tex] )

Answer:

(x+2)(3x^2-4)

Step-by-step explanation:

3x^3+6x^2-4x-8

Find the common factor: 2x

(x+2)(3x^2-4)