Question

explain what the discriminant is and what it tells you about the solutions of a quadratic equation

Answer 1

Help

Answer 2

the discriminant is b^2 - 4ac
it tells u how many roots/solutions an equation has and if they are real or imaginary

Answer 3

quadratic eqauation: \(\Large ax^2+bx+c=0\)
\[\Large x= {-b \pm \sqrt{b^2-4ac} \over 2a}\]
Discriminant: \(\Large D=b^2-4ac\)

Answer 4

when D>0 ... you have 2 distinct real number solutions

when D=0 ... you have 1 repeated real solution

when D<0 ... you have 0 real number solutions ... or 2 complex number solution



as long as a,b,c are real numbers, and a is not 0

Answer 5

http://www.mathwarehouse.com/quadratic/discriminant-in-quadratic-equation.php