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Which of the following graphs CANNOT represent a quadratic polynomial?

Class 10Graphical Meaning of ZeroesAlgebra — Polynomials
  • AA straight line
  • BAn upward parabola
  • CA downward parabola
  • DA parabola touching the -axis once

Step-by-Step Solution

A quadratic polynomial always graphs as a parabola, never a straight line (a straight line is a linear polynomial).
Answer: A) A straight line

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