Question

Which of the following expression is a polynomials
(a)
${x}^{3 } - 1$

(b)
$\sqrt{x} + 2$

(c)
${x}^{2} - \frac{1}{x {}^{2} }$


(d)
$\sqrt{t} + 5t - 1$
​

Answer 1

Answer:

(a) is a polynomial

(b) is not a polynomial

      $\sqrt{x} = x^{\frac{1}{2} }$

(c) $x^{2} - \frac{1}{x^{2} } = \frac{x^{4} -1}{x^{2} } ... not polynomial$

(d) not polynomial

Step-by-step explanation: