Question

solve: 636 =n/2 (2*9 + (n-1) 8)​

Answer 1

Answer:

Step-by-step explanation:

n/2(2*9+(n-1)8)=636

n(18+8n-8) = 636*2

n(8n+10) = 1272

8n^2 + 10n = 1272

8n^2 + 10n -1272 = 0

2 ( 4n^2 + 5n - 636 ) = 0

4n^2 + 5n - 636 = 0

Now solve this equation to get your answer

Answer 2

Answer:

Hello friend your answer is n=12

Step-by-step explanation:

Hope this helps you and mark me as the brainiest