If the discriminant $D = 0$,then the roots of the quadratic equation $ax^2 + bx + c = 0$ are ..... .

  • A
    $\frac{b}{2a}$
  • B
    $-\frac{b}{2a}$
  • C
    $\frac{2a}{b}$
  • D
    $-\frac{2a}{b}$

Explore More

Similar Questions

The speed of a motor-boat in still water is $x \, km/hr$ and the speed of the current of the river is $5 \, km/hr$. Given $x$ > 5, what is the time taken to cover a distance of $y \, km$ upstream?

Difficult
View Solution

State whether the following statement is 'True' or 'False'. Justify your answer: If in a quadratic equation the coefficient of $x$ is zero,then the quadratic equation has no real roots.

Find whether the following equation has real roots. If real roots exist,find them.
$8 x^{2}+2 x-3=0$

Examine whether the following equation is quadratic or not: $(x+6)(x+5)=0$.

Which of the following is a quadratic equation in one variable?

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo