1. A
   $1, -6$
2. B
   $-2, 1$
3. C
   $-1, -6$
4. D
   $-1, 6$

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1. A
   $1$
2. B
   $0$
3. C
   $-1$
4. D
   $2$

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1. A
   $1$
2. B
   $2$
3. C
   $2.5$
4. D
   $3$

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1. A
   $1$
2. B
   $3$
3. C
   $2.5$
4. D
   $-1$

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1. A
   $(-\infty, 1)$
2. B
   $[3, \infty)$
3. C
   $(-\infty, 1] \cup [3, \infty)$
4. D
   $(1, 3)$

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1. A
   $\alpha = -6, \beta = \frac{1}{2}$
2. B
   $\alpha = -6, \beta = -\frac{1}{2}$
3. C
   $\alpha = 2, \beta = -\frac{1}{2}$
4. D
   $\alpha = 2, \beta = \frac{1}{2}$

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1. A
   Meets the curve again in second quadrant.
2. B
   Does not meet the curve again.
3. C
   Meets the curve again in third quadrant.
4. D
   Meets the curve again in fourth quadrant.

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1. A
   $x + 2y = 0$
2. B
   $2x + y = 0$
3. C
   $x - y = 2$
4. D
   $x + y = 2$

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1. A
   $(4, 4)$
2. B
   $(-1, 2)$
3. C
   $(3, 6)$
4. D
   $\left(\frac{9}{4}, \frac{3}{8}\right)$

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1. A
   $0.8952$
2. B
   $0.9528$
3. C
   $0.9285$
4. D
   $0.9825$

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