Solve the Following Recurrence using Iteration Method

Question

T(n) = 4T $(\frac{n}{3})$ + n²

Comments

how to find genral expression at ith or kth step /stage ?

i am not able to find a general expression and not able to solve please help

Answer 1

Use Masters theorem 

Comments

dear sir please can you post the second page above two steps clearly i want to solve using iteration only .

please sir please

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i know only this

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I am too trying to clear my basics as much as possible for gate 2018 attempt,,so basically not an expert,