Answer:
m + 4
Step-by-step explanation:
I think you mean divide. Is that correct? If it is not leave me a note in your comments.
m^2 + 14m + 40
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m + 10
(m + 4)(m + 10)
============
m + 10
Cancel m + 10 on both the top and bottom
m + 4 is your answer.
