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NDA 2017
Exam
NDA
Year
2017
Subject
Mathematics
Chapter
Quadratic Equation

NDA 2017 · Mathematics · Quadratic Equation

If the graph of a quadratic polynomial lies entirely above x -axis,...

If the graph of a quadratic polynomial lies entirely above x -axis, then which one of the following is correct?

Options

  1. ABoth the roots are real
  2. BOne root is real and the other is complex
  3. CBoth the roots are complex
  4. DCannot say

Correct answer

C. Both the roots are complex

Step-by-step solution

Since the graph is not meeting the x - axis at all, roots are Complex numbers.
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