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NDA 2011
Exam
NDA
Year
2011
Subject
Mathematics
Chapter
Quadratic Equation

NDA 2011 · Mathematics · Quadratic Equation

What is the condition that one root of the equation a x^2+b x+c=0,...

What is the condition that one root of the equation ax2+bx+c=0,a≠0a x^2+b x+c=0, a \neq 0 should be double the other?

Options

  1. A2a2=9bc2 a^2=9 b c
  2. B2b2=9ac2 b^2=9 a c
  3. C2c2=9ab2 c^2=9 a b
  4. DNone of the above

Correct answer

B. 2b2=9ac2 b^2=9 a c

Step-by-step solution

The correct answer is option (B).
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