1. 23
2. 32
3. 41
4. 14
32
1. 18, 19 and 20
2. 19, 20 and 21
3. 20, 21 and 22
4. 21, 22 and 23
19, 20 and 21
1. 0 and 2
2. 1/2 and 3/2
3. 1 and 1
4. – 1 and 3
1 and 1
1. no solution
2. only one solution
3. only two solutions
4. several solutions
several solutions
1. a + b = 0
2. a + b = 1
3. a – b – 1 = 0
4. a + b + 1 = 0
a + b + 1 = 0
1. 2b / ac
2. -2b / √ac
3. 2b / √ac
4. –b/ √ac
-2b / √ac
1. 2a2 = 9bc
2. 9a2 = 2bc
3. 2b2 = 9ac
4. 9b2 = 2ac
2b2 = 9ac
1. 11/8
2. 11/24
3. 11/48
4. 11/96
11/96
1. Maximum distance travelled
2. Minimum distance travelled
3. Neither
4. Both
Minimum distance travelled
1. 4t – 1
2. 4t – 2
3. 2(2t – 2)
4. 4t + 8
2(2t – 2)