Question

What is the discriminant of the quadratic equation 0 = –x2 + 4x – 2?

Answer 1

The discriminant is the b^2 - 4ac part of the quadratic formula. So you plug in the numbers you should have 4^2 - (4)(-1)(-2) to give you the answer 8

Answer 2

Answer: The required discriminant of the given quadratic equation is 8.

Step-by-step explanation: We are given to find the discriminant of the following quadratic equation :

`-x^2+4x-2=0~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)`

We know that

the discriminant of a quadratic equation of the form
`ax^2+bx+c=0,~a\\eq 0` is given by

`D=b^2-4ac.`

In the given quadratic equation, we have

a = -1, b = 4 and c = -2.

Therefore, the discriminant of the given quadratic equation is

`D=b^2-4ac=4^2-4*(-1)*(-2)=16-8=8.`

Thus, the required discriminant of the given quadratic equation is 8.