Question

write the discriminant of the quadratic equation x2+4x +q=0​

Answer 1

Answer:

x²+4x+q = 0

Here, a=1, b=4, c=1

D = b²-4ac = 4²-4(1) (q)

=16-4q

Hence, discriminant is 16-4q

Answer 2

The discriminant of the quadratic equation is 16 - 4q  

Given:

The Quadratic equation x²+4x +q = 0​  

To find:

Write the discriminant of the quadratic equation  

Solution:

Formula used:

The formula for the discriminant of the quadratic equation ax²+bx+c
is given by

           Discriminant, Δ =  b²- 4ac  

Given quadratic equation is x²+4x +q = 0​  

Compare the given equation with ax²+bx+c  

=> a = 1, b = 4 and c = q

By the given formula, Discriminant, Δ =  b²- 4ac    

Discriminant, Δ =  4²- 4(1)(q)

= 16 - 4q  

Therefore,

The discriminant of the quadratic equation is 16 - 4q  

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