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10 questions
A quadratic equation has degree
0
1
2
3
A polynomial equation x(x+1) + 8 = (x+2) (x-2) is
linear equation
quadratic equation
cubic equation
bi-quadratic equation
The sum of roots of quadratic equation $3x^2\ -\ 9x\ +\ 5\ =\ 0$ is
3
6
-3
2
The roots of equation $7x^2\ +\ x-1$ are
real and distinct
real and same
imaginary/not real
none of the above
The equation $12x^2+4kx+3\ =\ 0$ has real and equal roots if,
k = $\pm$ 3
k = $\pm$ 9
k = 4
k = $\pm$ 2
If -5 is root of quadratic equation $2x^2+px-15=0$ then the value of p is
p = 5
p = 3
p = 7
p = 1
One year ago, a man was 8 times as old as his son. Now his age is equal to the square of his son age. Their present ages are..
7 years, 49 years
5 years , 25 years
1 year, 50 years
6 years, 49 years
Which of the following are the roots of equation $x^2-9x+20=0$
3, 4
4, 5
5, 6
6, 1
ax + b = 0 is general form of
quadratic equation
linear equation
cubic equation
none of the above
The roots of the quadratic equation are real and same if
$b^2-4ac$ <0
$b^2-4ac$ = 0
$b^2-4ac$ >0
None
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