Respuesta :

x^2 + x + 1 + 3x^2 + 3x + 2. Just combine the like terms:

x^2 + 3x^2 + x + 3x + 1 + 2

4x^2 + 4x + 3. <--- the sum.
The sum would be 4x^2 + 4x + 3.
To find the answer you would add like terms together.