Respuesta :

Answer:

[tex]5x^3+8x^2+2[/tex]

Step-by-step explanation:

[tex](2x^2+4-x^3)+(-4x^2+6x^3-2)=\\2x^2+4-x^3+4x^2+6x^3-2=\\6x^3-x^3+2x^2+6x^2+4-2=\\5x^3+2x^2+6x^2+4-2=\\5x^3+8x^2+4-2=\\5x^3+8x^2+2[/tex]