Which of the following expressions is a polynomial ? (a) √x−1 (b) x−1x+1 (c) x2−2x2+5 (d) x2+2x32√x+6

Which of the following expressions is a polynomial ? (a) √x−1 (b)

1.	Which of the following expressions is a polynomial ? (a) √x−1 (b) x−1x+1 (c) x2−2x2+5 (d) x2+2x32√x+6
Answer» Which of the following expressions is a polynomial ? (a) $\sqrt{x} - 1$ (b) $\frac{x - 1}{x + 1}$ (c) $x^{2} - \frac{2}{x^{2}} + 5$ (d) $x^{2} + \frac{2 x^{\frac{3}{2}}}{\sqrt{x}} + 6$