Question

ANSWER ASAPPPP PLEASEEEE

Answer 1

Hello!
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To add polynomials, combine like terms. Don't add exponents.


`(2mn + 4n^(2) ) + (5 {m}^(2) - 7mn)`

Remove the parenthesis and combine like terms.


`4n^(2) + 5 {m}^(2) - 5mn`
Rewrite in Standard Form:


`5m^(2) - 5mn + 4 {n}^(2)`


So the answer is C.