Solve the equation by completing the square.x2 + 12x + 15 = 0
A. {-12 + 
}
B. {-6 - 
, -6 + 
}
C. {6 - 
, 6 + 
}
D. {6 + 
}
Answer: B
Mathematics
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Find a formula for the nth partial sum of the series and use it to find the series' sum if the series converges.5 - 
+ 
- 
+ ... + (-1)n-1 
+ ...
A. 
; 10
B. 
; 
C. 
; 
D. 
; 10
Mathematics
Evaluate the line integral along the curve C.
ds , C is the path from (0, 0, 0) to (-4, 4, 1) given by:C1: r(t) = -4t2i + 4tj, 0 ? t ? 1C2: r(t) = -4i + 4j + (t-1)k, 1 ? t ? 2
A. 
- 
B. 
C. 
D. 
+ 
Mathematics
Find the numerical value of the expression for 
and 
x - 2
A. a) 2 b) 16 B. a) 16 b) 2 C. a) 6 b) 20 D. a) 8 b) 36
Mathematics
Express as a sum of logarithms.log2 xy
A. log2 x - log2 y B. log2 x + log2 y C. log1 x - log1y D. log1 x + log1 y
Mathematics