1. -1
2. 1
3. 0
4. -3
1
1. 5
2. 2
3. 4
4. 6
5
1. 1/4
2. 1/3
3. 1/2
4. 1/8
1/2
1. 4
2. 3
3. 2
4. 1
2
1. 8
2. 1
3. 0
4. -1
1
1. 5
2. 3
3. 2i
4. 2+i
5
1. 11
2. 2
3. 4
4. -4
-4
1. r = y = -z
2. -r = y = z
3. r = -y = z
4. r = y = z
r = y = -z
1. 1/17
2. -1/17
3. 17
4. -17
17
1. 20/27
2. 6/5
3. 0
4. 1
20/27