What is the sum of 8n-n^2+12 and 7-n^2-10n

-2n^2-2n+19

Step-by-step explanation:

To find the sum of of this expression 8n-n^2+12 and 7-n^2-10n

We will go by collecting the like terms

Which gave us;

-n^2-n^2+8n-10n+12+7

Then, our answer will now be

-2n^2-2n+19

true !

step-by-step explanation:

  the correct choice is marked

step-by-step explanation:

the first two graphs show multiple turning points. the last graphs matches the description in every detail.