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NDA 2011
Exam
NDA
Year
2011
Subject
Mathematics
Chapter
Quadratic Equation

NDA 2011 · Mathematics · Quadratic Equation

If α and β are the roots of the equation 4 x^2+3 x+7=0 , then what...

If αand\alpha and\betaaretherootsoftheequationare the roots of the equation4 x^2+3 x+7=0,thenwhatisthevalueof, then what is the value of\left(\alpha^{-2}\right. +β−2)?\left.+\beta^{-2}\right)?

Options

  1. A47/4947 / 49
  2. B49/4749 / 47
  3. C−47/49-47 / 49
  4. D−49/47-49 / 47

Correct answer

C. −47/49-47 / 49

Step-by-step solution

The correct answer is option (C).
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