Question Text
Question 1 :
If $81$ is discriminant of $2{ x }^{ 2 }+5x-k=0$ then the value of $k$ is
Question 4 :
Discriminant of a quadratic equation <span>$\displaystyle p{ x }^{ 2 }+qx+r=0$ is given by.</span>
Question 5 :
If the roots of the quadratic equation $ax^2+bx+c=0$ are all imaginary then which one of the following is true?
Question 6 :
If the discriminant of the quadratic equation $a{ x }^{ 2 }+bx+c$ is zero, then its roots will be
Question 8 :
If $ax^2 + bx + c =0$ has equal roots, then c is equal to ______.
Question 9 :
If the roots of the equation $ax^2+bx+c=0$ are all real equal then which one of the following is true?
Question 10 :
The condition for a general quadratic equation such that its both roots are equal, is