A. 2 ± i
B. 1 ± 2i
C. 2 ± 3i
D. None
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A. x² + x + 1
B. x² – 2x + 1
C. x² + 4x + 4
D. x² – x – 6
A. 10
B. -10
C. 7
D. -7
A. 17
B. 7
C. 10
D. -7
A. x² + 2x + 1
B. x² + 5x + 6
C. x² + 3x + 2
D. x² + 4x + 5
A. ±2
B. ±√2
C. 4, -4
D. 2, 2
A. b = 0
B. c = 0
C. a = 0
D. D < 0
A. k = 6
B. k = -6
C. k = 9
D. k = -9
A. -4, -5
B. 4, 5
C. -5, 4
D. 5, -4
A. -2, -2
B. 2, -2
C. -4, 1
D. 2, 2
