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If the discriminant of a quadratic equation is 0, the two roots are:

Class 10The Quadratic FormulaQuadratic Equations

Areal and equal
Breal and distinct
Cimaginary
Done zero, one non-zero

Step-by-Step Solution

When

b^{2} - 4 a c = 0, x = \frac{- b}{2 a}

is a single repeated value, so the roots are real and equal.

Answer: A) real and equal

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