(Simplify): (4m + 5n)? + (5m - 4n)?
Answers
Answered by
1
Answer:
20m²-16m²+25mn-20n²
4m²+25mn-20n²
Answered by
2
Answer:
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Step-by-step explanation:
(4m + 5n) + (5m - 4n)
4m + 5n + 5m - 4n
(4m +5m) + ( 5n - 4n)
9m + n
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