Factor the difference of squares.81pm4 - 81pn4 

A. 81(m2p + n2)(mp + n)(mp - n)
B. 81p(m2 + n2)(m + n)(m - n)
C. p(9m2  + n2)(9m + n)(9m - n)
D. 81p(m2 - n2)2

Answer: B

Mathematics

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