If the equation 2x2 + 3x + k = 0 has only one solution then k =
-9/8
9/8
0
2
Find the discriminant of the quadratic equation 5 x2 + 12 x - 9 = 0
224
324
342
424
The roots of a quadratic equation when b2 - 4 ac is positive are
Real and unequal
Rational
Irrational
Equal
The positive value of 'a' for which equations x2 + a x + 64 = 0 and x2 - 8 x + a = 0 will both have real roots is
a = 20
a = 16
a = 8
a = 4
Find the roots of the equation 3x2 - 300 = 0
3 and 6
6 and 5
10 and -10
5 and -5
Find the value of k for which the equation 4 x2 - 12 x + k = 0 has equal roots
8
6
7
9
The no.of real roots of the equation x2 - 3|x| + 2 = 0 are
3
4
1
The no. of solution for the equation x2 - 5 |x| + 6 = 0 is
If ∝ and β be the roots of the equation (x - a) (x - b) = c, c ≠ 0, then the roots of the equation (x - ∝)(x - β) + c = 0 are
a and c
b and c
a and b
(a + b) and (b + c)
If the roots of equations x2 + a2 = 8 x + 6 a are real, then
a ∈[2, 8]
a∈[-2, 8]
a∈(2, 8)
