Solve the problem. Express answers relative to an x'y'-system in which the given equation has no x'y'-term.x2 + 2xy + y2 - 8x + 8y = 0; Find the coordinates of the vertex.
A. (0, 0)
B. (-2, 0)
C. 
D. (2, 0)
Answer: A
Mathematics
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Solve using Cramer's rule.
A. (-1, -2) B. (0, -2) C. (0, -3) D. No solution
Mathematics
Write a fraction to represent the shaded region.
A. 
B. 
C. 
D. 
Mathematics
Solve the equation for the interval [0, 2?).4 sin2x = 4 cos x + 1
A. 
, 
B. No solution
C. 
, 
D. 
, 
Mathematics
Find the exact value of the expression.sin 265° cos 25° - cos 265° sin 25°
A. - 
B. 
C. - 
D. - 
Mathematics