jika 8²n+1 = 16√n-4 maka nilai 2n +4 adalah.. a.-15 b.-12 c.12 d.15

8^2(n+1) = 16^√(n-4)
2^(6n+6) = 2^(2n-8)
6n + 6 = 2n -8
6n - 2n = -6 -8
4n = -14
n = -14/4 = -7/2
2n + 4
= 2(-7/2) + 4
= -7+4
= -3