Rom 10:9 "that if you confess with your mouth Jesus as Lord, and believe in your heart that God raised Him from the dead, you will be saved."
To me that's rather succinct.
Since the Bible is the inspired Word of God, these two verses must not contradict each other. They must be in harmony. Correct? Therefore, there must be common teaching in each of these verses. Romans 10:9 mentions confession and belief. Acts 2:38 mentions repentance and baptism for the remission of sins. These two verses together cover everything I mentioned as being required for salvation. So why do you want to cling to one verse and ignore the other?