1. 2 b2 =9ac
2. b2 =ac
3. b2 =3ac
4. b2 =9ac
2 b2 =9ac
1. -3,1,1/2
2. 3,1,1/2
3. -3,-1,1/3
4. -3,-1,1/2
-3,-1,1/2
1. 3/7
2. -3/7
3. 4/7
4. -4/7
-3/7
1. –r/q
2. r/q
3. 2r/q
4. 3r/q
r/q
1. 1
2. -2
3. 3
4. -6
-6
1. x5+x4-x3+x2=0
2. x5-x4-x3+x2=0
3. x5-x4+x3-x2=0
4. x5+x4-x3-x2=0
x5-x4-x3+x2=0
1. a/b
2. b/c
3. 3abc- b3/a3
4. c/a
3abc- b3/a3
1. -18
2. 18
3. -28
4. 28
-28
1. 13/17
2. 17/13
3. -17/13
4. -13/11
-13/11
1. -13
2. 13
3. -11
4. 11
-13