1. a + b =0
2. b + c =0
3. b=c
4. a =b
b=c
1. (3/4, ∞)
2. (-∞,-3/4)
3. (-3/4, 3/4)
4. [-3/4, 3/4]
(-∞,-3/4)
1. rx3-qx2+1=0
2. rx3+qx2+1=0
3. rx3-qx2-1=0
4. rx3+qx2+1=0
rx3-qx2-1=0
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Neither I nor II
1. x4-x3+x-25=0
2. x4+x3+x+25=0
3. x4+x3+x-25=0
4. x4+x3-x-25=0
x4-x3+x-25=0
1. xn-xn-2-xn-5+m=0
2. xn+xn-2+xn-5+m=0
3. xn+xn-2-xn-5+m=0
4. xn-xn-2+xn-5+m=0
xn+xn-2-xn-5+m=0
1. 0
2. -3/2
3. 3/2
4. -2
3/2
1. -7,-5,2
2. 7,-5,-2
3. 5,7,2
4. 5,-7,-2
7,-5,-2
1. 1/4
2. 3/2
3. -9/8
4. 9/4
-9/8
1. x+y-9=0
2. 2x+y-13=0
3. 2x-y=0
4. 2x-y+3=0
x+y-9=0