Verified Answer :

Find the sum 2mn + 4n2 and 5m2 - 7mn 

5m^2 + (2-7)mn + 4n^2 
=5m^2 - 5mn + 4n^2 

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Answer:

2mn+4n^2 and 5m^2-7mn

Step-by-step explanation:

The steps to follow to carry out this operation is to bring together those who are equal: 2mn + 4n ^ 2 and 5m ^ 2-7mn

We have: 2mn and -7mn

Therefore: 5m ^ 2 + (2-7) mn + 4n ^ 2

What will result in: 5m ^ 2 - 5mn + 4n ^ 2

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