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(a^(3)-64b^(3))/(a^(2)+3ab-28b^(2))=?...

`(a^(3)-64b^(3))/(a^(2)+3ab-28b^(2))=?`

A

`(a-b)/(a+3b)`

B

`(a^(2)+4ab+16b^(2))/(a+7b)`

C

`(p-q)(pq-r^(2))`

D

`(p-qr)(p+q)`

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Simplify: a^(2)b(a-b^(2))+ab^(2)(4ab-2a^(2))-a^(3)b(1-2b)