The positive root of the equation x2 + 3x - 28 = 0 is
6
5
4
3
The roots the equation x2 - 4x - 45 = 0 are ___________
5 and 9
-9 and 5
-9 and -5
9 and -5
Which of the following is a quadratic equation ?
x + 1/x + x4 = 0
x3 - 7x2 + 3x - 5 = 0
3x2 - 5x + 3 = x2 - x + 1
x + 7/x - 3x3 = 0
Find the discriminant of the quadratic equation 5x2 + 12x - 9 = 0
224
324
342
424
The discriminant of the quadratic equation x2 + 9 = 0 is ____________________
36
-36
9
18
9x2 - 30x + 25 = 0 the nature of the roots is
It has no solution
only one solution
Two different solution
One is the reciprocal of the other
The solution of ax2 + bx + c = 0 when b2 = 4ac is ____________
Only one
No solution
Inverse solution
Form the quadratic equation if the solution are -7 and 3
x2 - 4x + 21= 0
x2 + 4x - 21 = 0
x2 + 4x + 21 = 0
x2 - 4x - 21 = 0
If there is only one solution of the equation x2 + px + 25 = 0 the values of p are ____________
5 and -5
4 and -4
10 and 15
-10 and +10
The non zero root of 5x2 - 30x = 0 is
-5
-6