Question

Which expressions are polynomials?

Select each correct answer.

Answer 1

$2x^4 -y$, z+ 1  and 6+w

Step-by-step explanation:

Polynomial : A polynomial is an expression consisting of variables and coefficients that involves only the operation of addition , subtraction multiplication and positive integer exponents of variable.

A. $2x^4 -y$     It is a polynomial of two variable.

B. z+ 1          It is a polynomial of one variable.

C. $y^2- \sqrt[3]{y} +4$     It is not polynomial because t power of y in second term is $\frac{1}{3}$

D. 6+w     It is a polynomial of one variable.