Respuesta :

From the box we know that the area as a product is given by:

[tex]3x(6x^2-x+9)[/tex]

And the result as a sum is given by:

[tex]18x^3-3x^2+27x[/tex]

Then:

[tex]3x(6x^2-x+9)=18x^3-3x^2+27x[/tex]