If 3 + 4 i is a root of the equation x2 + p x + q = 0, then
p = 6 and q = 25
p = 6 and q = 1
p = -6 and p = -7
p = -6 and q = 25
The root of quadratic equation x2 - 4 x + 2 = 0 are
±√2
1±√2
2±√2
3±2√2
If the roots of equations x2 + a2 = 8 x + 6 a are real, then
a ∈[2, 8]
a∈[-2, 8]
a∈(2, 8)
a = 4
Let p, q ∈{1, 2, 3, 4, 5}. The no. of equations of the form p x2 + q x + 1 = 0, having real root is
7
8
9
15
Find the value of k for which the equation 4 x2 - 12 x + k = 0 has equal roots
6
Find the roots of the equation 3x2 - 300 = 0
3 and 6
6 and 5
10 and -10
5 and -5
If b2 - 4 ac is a perfect square, then the roots of the quadratic equation are
Real and unequal
Irrational
Equal
Rational
The no. of solution for the equation x2 - 5 |x| + 6 = 0 is
4
3
2
1
The roots for the equation a(x2 + 1) - (a2 + 1) x = 0 are
a and 1/a
a and 1/2 a
a and 2 a
a and -2 a
