Find the roots of the equation 3x2 - 300 = 0
3 and 6
6 and 5
10 and -10
5 and -5
If the roots of the quadratic equation x2+Px + q = 0 are tan 30o and tan 15o, then value of 2+ q-p is
1
2
3
0
Find the discriminant of the quadratic equation 5x2 + 12x - 9 = 0
224
324
342
424
The nature of the roots of the equation 2x2 -7 x + 3 = 0 is
Imaginary
Real and rational
Rational
Equal
If both roots of the quadratic equation x2 - 2kx + k2 + k- 5=0 are less than 5, than k lies in the interval.
(5, 6)
(6,∞)
(-∞, 4)
(4, 5)
The nature of the roots of the equation 3x2 - 7x + 5 = 0 is
Real and unequal
If α, β are the roots of the equation ax2 + bx + c = 0, what is the value of ( a α+b) -1 + ( a β + b) -1?
a/bc
b/ ac
-b/ac
-a/bc
If α and β are the roots of the quadratic equation ax2 + bx + c = 0, then α + β=
b/a
c/a
-b/a
-c/a
If the equation 2x2 + 3x + k = 0 has only one solution then k = ______________
-9/8
9/8
The roots of a quadratic equation when b2 - 4ac is positive are
Real and un equal
Irrational
