D=x2 -4ac

Asked by VEDIKA.L | 6th Oct, 2009, 07:21: PM

Expert Answer:

D = b2 - 4ac is the equation for finding out Discriminant.

By knowing the discriminant we can comment on the type of roots the equation will have like:

Discriminant > 0 ⇒ Roots are real and unequal

Discriminant = 0 ⇒ Roots are equal and each equal to -b/2a

Discriminant < 0 ⇒ Roots are imaginary and unequal or complex conjugate.

Answered by  | 7th Oct, 2009, 11:53: AM

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