Question

Expand and simplify 3(3x+3)-3x(4x+2)

Answer 1

−12
`x^(2)`+3x+9

Explanation:

=(3)(3x)+(3)(3)+−12x2+−6x

=9x+9+−12x2+−6x

Combine Like Terms:

=9x+9+−12x2+−6x

=(−12x2)+(9x+−6x)+(9)

=−12
`x^(2)`+3x+9

Answer 2

To do this one, distribute first.
9x+9-12x^2-6x
Now find the like terms and add/subtract
3x+9-12x^2
And to put this in order:
-12x^2+3x+9