Which of these is a quadratic polynomial?

Which of these is a quadratic polynomial?
  1. $3x^{2} - x + 1$
  2. $3x + 5$
  3. $5$
  4. $x^{3} + 2$

Solution

Highest degree $= 2 \Rightarrow$ quadratic.

Asked in: MH-SSC-9

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