Respuesta :

Answer: -x+6x+x-7

The x is to the 3rd power and the 6 is to the second power. Hope this helps XD

Step-by-step explanation:

Answer:

[tex]-x^3 + 6x^2 + 5x - 7[/tex]

Step-by-step explanation:

[tex](-x^3-x) +(6x^2+6x-7)[/tex]    (Simplify by adding the like terms)

= [tex]-x^3 + 6x^2 +6x - x - 7[/tex]    (Simplify)

= [tex]-x^3 + 6x^2 + 5x - 7[/tex]