It's easier to explain qualified use.
To qualify for the capital gains tax exclusion the property must have been your primary residence for at least 24 months of the last 60 months you owned it, counting backwards from the closing date on the HUD-1 statement you will receive at the closing when you sell it. The 24 months do not have to be consecutive. but they must all have been within the last 60 months you owned it.
You don't state the time periods when it was a rental and when it was your personal home, so it is impossible to answer your question.
