Question

If we need(D-Discriminant) (i)equal roots:D=0 (ii)real roots:D>or=0 (iii)Then what about the value of D for real and equal roots?

Answer 1

Two distinct real roots, if,

${b}^{2} - 4ac > 0$

Two equal roots, if,

${b}^{2} - 4ac = 0$

No real roots, if,

${b}^{2} - 4ac < 0$

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