Respuesta :

We can write this expression as:

[tex]\begin{gathered} \lbrack(7x^2+8x+4)+(8x^2+9x-2)\rbrack-(3x+6) \\ (15x^2+17x+2)-(3x+6) \\ 15x^2+17x-3x+2-6 \\ 15x^2+14x-4 \end{gathered}[/tex]

Answer: 15x^2 + 14x - 4