Which of the following expressions are polynomials in one variable and which are not

MATHEMATICS · Multi-part · CBSE · Mathematics · Polynomials · Polynomials

Problem

1. Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer. (i)

4 x^{2}-3 x+7

(ii)

y^{2}+\sqrt{2}

(iii)

3 \sqrt{t}+t \sqrt{2}

(iv)

y+\frac{2}{y}

(v)

x^{10}+y^{3}+t^{50}