Factor completely. If the polynomial cannot be factored, say it is prime.(x - 2)2 - 9
A. (x + 7)(x - 11)
B. (x - 1)(x + 5)
C. (x + 1)(x - 5)
D. (x - 5)2
Answer: C
Mathematics
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+ 
A. 
B. 
C. 
D. 
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p
A. Valid B. Invalid
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Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos ? = - 
, csc ? < 0Find cos (2?).
A. 
B. 
C. - 
D. 
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