Use a special product formula to simplify.[(7 - m) + n]2

A. m2 + n2 - 14m + 2mn + 14n + 49
B. m2 + n2 - 14m - 2mn + 14n + 49
C. m2 + n2 - 14m + 49
D. m2 + n2 + 2mn - 7n + 49


Answer: B

Mathematics

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