Evaluate the integral.
x dx
A. x cos-1x - 2
+ C
B. x cos-1x + 
+ C
C. x cos-1x - 
+ C
D. x cos-1x - 
+ C
Answer: C
Mathematics
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Find all real-number square roots of the given number.
A. - 
B. ± 
C. 
D. ± 
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Simplify the expression.
÷ 
- 
A. 
B. 
C. 
D. 
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