Factor by grouping.x3 - x2 + 9x - 9
A. (x2 - 9)(x + 1)
B. (x2 - 1)(x + 9)
C. (x2 + 9)(x - 1)
D. (x2 + 1)(x - 9)
Answer: C
Mathematics
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-1/2
A. 
B. 
C. 
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and state the units on the simplified value.
A. 
B. 
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D. 
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