Which of the following expressions are polynomials? (i) x2 + 4 (ii) 4� – InterviewSolution

1.	Which of the following expressions are polynomials? (i) x2 + 4 (ii) 4−x−1 (iii) 2x2 - 2x
Answer» Which of the following expressions are polynomials? (i) $x^{2}$ + 4 (ii) $4 - x^{- 1}$ (iii) $2 x^{2}$ - $\frac{2}{x}$

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