**3-1**

**3-2**

**3-3**

**3-4**

**3-5**

Assume:

**3-6**

Assume: and

**3-7**

**3-1**

**3-2**

**3-3**

**3-4**

**3-5**

Assume:

**3-6**

Assume: and

**3-7**

**2-1:**

> (+ 3-i 2+4i)

5+3i

> (+ 1+3i 2)

3+3i

> (- -5+2i 2+2i)

-7

> (+ -2+i 2+2i)

+3i

> (* 3-i 2+4i)

10+10i

> (* 1+3i 2)

2+6i

> (* 0+i 1+3i)

-3+i

> (* -5+2i 2+3i)

-16-11i

> (* 2+3i -2+3i)

-13

> (* 2+3i 3+2i)

+13i

**2-2:**

**2-3:**

**2-4:**

**2-5:**

for

for

**2-7:**

since the above is now in the usual form of the quadratic formula it is clear z is a solution.