Find the value of k for which the equation 4x2 - 12x + k = 0 has equal roots
8
6
7
9
If b2 - 4 ac is a perfect square, then the roots of the quadratic equation are
Real and unequal
Irrational
Equal
Rational
Find the discriminant of the quadratic equation 5x2 + 12x - 9 = 0
224
324
342
424
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 non zero root of the equation x (x - 6) = 0 is
-6
3
-3
If the equation 2x2 + 3x + k = 0 has only one solution then k = ______________
-9/8
9/8
0
2
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
The nature of the roots of the equation 2x2 -7 x + 3 = 0 is
Imaginary
Real and rational
An equation in which the highest power of the variable is ___________, is called a quadrate equation
1
None of these
The nature of the roots of the equation 3x2 - 7x + 5 = 0 is
