Complex Numbers

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

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1. A.
   $\frac{\sqrt{34}}{3}$
2. B.
   $\frac{5}{3}$
3. C.
   $\frac{\sqrt{41}}{4}$
4. D.
   $\frac{5}{4}$

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1. A.
   $3x + 5y - 8 = 0$
2. B.
   $3x - 5y - 8 = 0$
3. C.
   $-3x + 5y - 8 = 0$
4. D.
   $3x + 5y + 8 = 0$

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

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1. A.
   $-\dfrac{2\pi}{3}$
2. B.
   $\dfrac{\pi}{3}$
3. C.
   $-\dfrac{\pi}{3}$
4. D.
   $\dfrac{2\pi}{3}$

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1. A.
   $-\dfrac{2}{5}-\dfrac{4}{5}i$
2. B.
   $-\dfrac{2}{5}+\dfrac{4}{5}i$
3. C.
   $\dfrac{2}{5}-\dfrac{4}{5}i$
4. D.
   $\dfrac{2}{5}+\dfrac{4}{5}i$

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1. A.
   $4\cos\left(\dfrac{n\pi}{2}\right)$
2. B.
   $2(n+1)\cos\left(\dfrac{n\pi}{2}\right)$
3. C.
   $2[1 + (-1)^n]$
4. D.
   $2(n+2)$

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

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

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1. A.
   circle with center $(2,0)$ and radius $\sqrt{3}$
2. B.
   circle with center $(0,2)$ and radius $\sqrt{3}$
3. C.
   circle with center $(0,0)$ and radius $\sqrt{3}$
4. D.
   circle with center $(0, - 2)$ and radius $\sqrt{3}$

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