Multiply.(9a4 - 9b3)(8a5 + 6b5)

A. 72a20 + 54a4b5 + 72a5b3 + 54b25
B. 72a9 + 54a4b5 - 72a5b3 - 54b8 
C. 72a9 + 54a4b5 + 72a5b3 + 54b10 
D. 72a20 + 54a4b5 - 72a5b3 - 54b25 


Answer: B

Mathematics

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