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If D > 0 and is a perfect square (a, b, c rational), the roots are:

Class 10The Quadratic FormulaAlgebra — Quadratics
  • Areal, distinct and rational
  • Breal, equal and rational
  • Creal, distinct and irrational
  • Dnot real

Step-by-Step Solution

gives distinct real roots; a perfect-square makes rational, so the roots are rational.
Answer: A) real, distinct and rational

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