Question

what is the value of discriminant for the quadratic equation x²-2x-3=0​

Answer 1

Answer :-

Given :-

• Quadratic equation : x²-2x-3=0

To Find :-

• Discriminant

Solution :-

We know that,

$\implies\sf Discriminant = b^2 - 4ac$

For the given equation :-

• a = 1
• b = -2
• c = -3

Substituting the values :-

$\implies\sf D = b^2 - 4ac$

$\implies\sf D = (-2)^2 - 4 \times 1 \times ( - 3 )$

$\implies\sf D = 4 + 12$

$\implies\sf D = 16$

Value of Discriminant = 16

Answer 2

Given

• equation x²-2x-3=0​

To find

• The value of discriminant.

Answer

The value of discriminant is -16.

Solution

On comparing the given equation with x² + bx + c = 0

Here, a = x , b = -2 and c = -3

D(discriminant) = b² – 4ac

D = (-2)² –  4 × x × 3

D =  -4 – 12

D = -16

∴Hence, The value of discriminant is -16.

_____________________________