Someone please help me I’ll give out brainliest please dont answer if you don’t know

7n^2+3n-11

Step-by-step explanation:

should be right, if incorrect i 100% apologize

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

h= 12 inches

step-by-step explanation: