Respuesta :

palhair

Answer:

7n^2+3n−13

Step-by-step explanation:

Let's simplify step-by-step.

4n^2+8n−12+3n^2−5n−1

=4n^2+8n+−12+3n^2+−5n+(−1)

Combine Like Terms:

=4n^2+8n+−12+3n^2+−5n+(−1)

=(4n^2+3n^2)+(8n+−5n)+(−12+−1)

=7n^2+3n−13