Multiple choice

If the discriminant of quadratic equation ${ b }^{ 2 }-4ac=0$ then the roots are

  1. Real and equal

  2. Roots are equal

  3. No real roots

  4. Roots are unequal and irrational
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A Correct answer
AI explanation

The discriminant of a quadratic equation determines the nature of its roots using the formula D equals b squared minus 4ac. If the discriminant equals zero, the quadratic formula gives exactly one repeated root. Therefore, the roots are real and equal.

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