Solve by completing the square.x2 + 8x - 5 = 0
A. x = -4 ± 
B. x = 4 + 
C. x = -4 ± 2
D. x = -1 ± 
Answer: A
Mathematics
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Find an equation of an ellipse satisfying the given conditions.Foci at (-2, 0) and (2, 0); length of major axis: 10
A. 
+ 
B. 
+ 
C. 
+ 
D. 
+ 
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Find the limit.
cos(x + ?)
A. 0
B. -
C. 
D. 1
Mathematics
Add or subtract. Simplify the answer.
- 
A. 
B. 
C. 
D. 
Mathematics
Determine whether the pair of triangles is congruent.
A. congruent B. not congruent
Mathematics