Find the value of k of the quadratic equation 2x2 + kx + 3 = 0, so that it has equal roots.
± 2√3
± 2√6
± 2√7
± √2
Two consecutive even integers are
x, x + 2
x, x + 1
x, x - 1
x, 2x
The discriminant of the quadratic equation x2 - 4x + 4 = 0 is
0
4
-4
-16
Find two consecutive positive integers, sum of whose squares is 365.
12, 13
13, 14
14, 15
15, 16
Find the value of the discriminant for the quadratic equation x2 + 4x - 21 = 0
99
98
100
101
If the equation x2 + 4x + k has real and distinct roots, then
k = 4
k ≥ 4
k < 4
k ≤ 4
Find the nature of the roots of the quadratic equation 2x2 - 6x + 3 = 0.
Two distinct real roots
Two equal real roots
No real roots
No roots
If the roots of the quadratic equation ax2 + bx + c are sin α and cos α, then
a2 + b2 = c2
a2 - 2bc = b2
b2 + 2ac = a2
b2 - 2ac = a2
The roots of the quadratic equation 6x2 - x - 2 = 0 are
(2/3, 1)
(-2/3, -1/2)
(2/3, -1/2)
(1/2, -2/3)
If the sum of the squares of two consecutive positive even numbers is 340, then what is the sum of the two even numbers?
24
26
28
30
