Factor completely. If unfactorable, indicate that the polynomial is prime.(x - 9)2 - 16
A. (x - 5)(x - 13)
B. (x + 5)(x + 13)
C. (x + 7)(x - 25)
D. (x - 13)2
Answer: A
Mathematics
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Find the center of mass of a thin plate covering the given region with the given density function.The region between the x-axis and the curve y = 
, 1 ? x ? 2, with density ?(x) = 
A. 
= 
, 
= 3
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
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Perform the indicated operations and simplify the result. Leave the answer in factored form.
+ 
A. 
B. 
C. 1
D. 
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Convert to polar coordinates. Express the answer in radians, using the smallest possible positive angle.(3, -3
)
A. 
B. 
C. 
D. 
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Add.13 + (-13) + 11 + (-14) + 20 + (-7)
A. 10 B. -78 C. 14 D. -12
Mathematics