Your answer makes no sense.
Are you not reading my and PsyDAG's replies?
Why are you changing exponents in addition?
Are you missing the + sign near the end of your expression?
14m^2 n^3 + 6 m^3 n^3 3m^2 n^3 =
ANSWER: 23m^6 n^9
2 answers
no i not missing any this and the answer you have given me so far are not in the choices