Factor the expression. Express your answer so that only positive exponents occur. (3m + 1)-2/5 + (3m + 1) 1/5 + (3m + 1) 7/5
A. (3m + 1)-2/5 [1 + (3m + 1) 3/5 + (3m + 1) 9/5]
B. (3m + 1)-2/5 [1 + (3m + 1)-3/5 + (3m + 1) -9/5]
C. (3m + 1)-2/5 [1 + (3m + 1) 4/5 + (3m + 1) 7/5]
D. (3m + 1)-2/5 [1 + (3m + 1) 3/5 - (3m + 1) 9/5]
Answer: A
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A. 
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