10 Question MCQ (including Assertion)

The quadratic equation \(2 x^2-\sqrt{5} x+1=0\) has

Which of the following is not a quadratic equation?

Which of the following equations has the sum of its roots as 3 ?

Which of the following is a quadratic equation?

Values of \(k\) for which the quadratic equation \(2 x^2-k x+k=0\) has equal roots is

The discriminant of the quadratic equation \(\mathrm{x}^2-3 \mathrm{x}-2=0\) is :

The discriminant of the quadratic equation \(b x^2+a x+c=0 ; b \neq 0\) is given by :

The equation \(x+\frac{1}{x}=3(x \neq 0)\) is expressed as a quadratic equation in the form of \(\mathrm{ax}^2+\mathrm{bx}+\mathrm{c}=0\). The value of \(\mathrm{a}-\mathrm{b}+\mathrm{c}\) is :

The roots of the quadratic equation \(4 x^2-(a-1)^2=0\) are :