Evaluate the integral by using a substitution prior to integration by parts.
A. x 
2 - 2x 
+ 2x + C
B. x 
2 + 2x 
- 2x + C
C. x 
2 - x 
+ x + C
D. x 
2 - 2x 
+ C
Answer: A
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B. (a) 
; (b) - 4
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