I have this recurrence and I have tried to solve it but I am completely lost. Master Theorem cannot be applied on this at-least not without some substitution or stuff.
$ i)\quad T(n) = 4 T( \left \lfloor{\frac{n}{2}}\right \rfloor + 5) + n^2$
Any help is appreciated.
Edit: Since I am already asking one question, I would put another recurrence in here as well. It seems really complicated and I am not sure which method should I be applying to solve it.
$ii) \quad T(n) = T(n-4) + \frac{1}{n} + \frac{5}{n^2+6} + \frac{7n^2}{3n^2+8} $