1. 45
2. 52
3. 50
4. 46
52
1. x2+y2-6x+2y-6 = 0
2. x2+y2-6 = 0
3. x2+y2-3x+y-6 = 0
4. x2+y2 = 0
x<sup>2</sup>+y<sup>2</sup>-6x+2y-6 = 0
1. 100
2. 199
3. 201
4. 200
201
1. 4
2. 6
3. 8
4. 3
4
1. 0
2. 1
3. n
4. -n
-n
1. (√3 + 1)/2
2. (√3 - 1)/2
3. 1/3
4. -1/3
(√3 - 1)/2
1. π/6
2. π/4
3. π/3
4. π/2
π/6
1. 13/1000
2. 13/100
3. 17/100
4. 17/1000
13/100
1. 0
2. 1
3. (-1)n-1
4. -1
(-1)<sup>n-1</sup>
1. a2x2+a(b-c)x+bc = 0
2. a2x2+a(b-c)x-bc = 0
3. ax2+(b+c)x+bc = 0
4. ax2+(b+c)x-bc = 0
a<sup>2</sup>x<sup>2</sup>+a(b-c)x-bc = 0