Question

The nature of the roots of a quadratic equation is determined by the

• A. Coefficient of a, b
• B. Discriminant
• C. Coefficient of a, b, c
• D. Coefficients of b and c

Answer 1

The correct option is B Discriminant

On using quadratic formula we will find out that discriminant will determine the nature of the roots.

If D>0 then real & unequal roots

If D=0 then real & equal roots

If D<0 then imaginary roots