Add or subtract.(9m2n - 2mn + 4mn2) - (5m2n + 2mn - 6mn2)

A. 4m4n2 - 4m2n2 + 10m2n4
B. 4m4n2 - 4mn + 10m2n4
C. 4m2n + 6
D. 4m2n - 4mn + 10mn2


Answer: D

Mathematics

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