Factor completely.64m2n - 64mn + 40m2 - 40m
A. 8m(m + 1)(8n - 5)
B. 8(m2 - 1)(8n + 5m)
C. 8m(m - 1)(8n + 5)
D. 8m(m - 5)(8n + 1)
Answer: C
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A. - 
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x
A. 
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C. 
D. 4?
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Fill in the blank(s) with the appropriate word(s).