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NDA2011MathematicsQuadratic EquationActual

What is the condition that one root of the equation a x^2+b x+c=0, a 0 should be double the other?

Options

  1. A2 a^2=9 b c
  2. B2 b^2=9 a c
  3. C2 c^2=9 a b
  4. DNone of the above

Correct answer

B. 2 b^2=9 a c

Step-by-step solution

The correct answer is option (B).

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