what is the discriminant of a quadric equation?

Answer 1

if you know the quadratic equation then then discriminant is everything under the square root sign.
so the discriminant is: b^2 - 4ac

Answer 2

The discriminant of a quadratic is the function which determines the value of the roots. Given the quadratic equation formula:

x=1/2a(-b+-sqr(b^2-4ac)

The determinant is b^2-4ac. Of which there are three possible results

(1) b^2=4ac giving one real solution
(2) b^2>4ac giving two real solutions
(3) b^2<4ac giving two imaginary solutions

For example x^2-2x+4
Here a=1, b=-2, c=4, so from above we have:
(2)^2<4*1*4
4<16. this indicated equation (3) giving imaginary solutions

Hope this helps

Answer 3

Assuming your equation is in the form a^2 (x) + b(x) + c, the discriminant is b^2 - 4ac

Answer 4

discrimant of equation ax^2+bx +c is b^2-4ac

Answer 5

Quadratic Formula

x = - b ± √b² - 4ac / 2a

The discriminant

√b² - 4ac

- - - - - - - - - s-