Factor by grouping.x3 + 7x2 - 6x - 42
A. (x2 + 7)(x - 6)
B. (x3 - 6x)(x + 7)
C. (x2 - 6)(x - 7)
D. (x2 - 6)(x + 7)
Answer: D
Mathematics
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at 
A. 
B. 
C. 
D. 
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A. - 
B. 
C. 
D. - 
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A. 9x10 B. 9x9 C. x10 D. x9
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