Question

If the discriminant of quadratic equation b square minus 4 ac is equal to zero then the roots are

Answer 1

Answer

b

2

−4ac>0

∴△>0

So, two equal real roots or only one real root.

Answer 2

Answer:

The correct answer of this question is roots are real and equal.

Step-by-step explanation:

Given -  The discriminant of quadratic equation b square minus 4 ac is equal to zero.

To Find - Write if the discriminant of quadratic equation b square minus 4 ac is equal to zero then the roots are.

Underneath the square root symbol is the discriminant, which is a portion of the quadratic formula.

Any equation in which the unknown is squared but not raised to a higher power.

Discriminant is -

$D = b^{2} - 4ac = 0$

Now, let the $ax^{2} + bx + c = 0$ be a standard quadratic

equation then roots are -

$x = \frac{-b\sqrt{b^{2}-4ac } }{2a}$  = $\frac{-b}{2a} , \frac{-b}{2a}$

Hence, roots are real and equal.

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