Simplify.7[-7 + 5(-8 + 4)]
A. 52
B. 56
C. -69
D. -189
Answer: D
Mathematics
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Use reduction formulas to evaluate the integral.
A. 5 ln
+ 
cos2 x + C
B. 5 ln
- 
sin x + C
C. 5 ln
+ 5 sin x + C
D. 5 ln
- 
cos2 x + C
Mathematics
Find the length of the curve r(t) = -2ti-tj+tk, -2?t?1.
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Mathematics
Perform the indicated operation. Write the answer in lowest terms.
? 
A. 
B. 
C. 
D. 18
Mathematics
Solve the quadratic equation by any method.x2 = 36
A. -6, 6
B. 0, 6
C. 6
D. -6 + i
Mathematics