Answer:
z+1 , 6 + w and [tex]2x^{4}+4[/tex] are polynomials.
Step-by-step explanation:
Given : Expressions.
To find: Which expressions are polynomials.
Solution : We have given expression
Polynomial : A polynomial is an expression consisting of variables and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer.
So, z + 1 having variable z and contact 1 so, it is a polynomial.
6 + w is also a polynomial.
[tex]2x^{4}+4[/tex] is also a polynomial that has degree 4 .
But expression [tex]y^{2}-\sqrt[1]{y}+4[/tex] is not a polynomial because it has fractional exponent.
Therefore, z+1 , 6 + w and [tex]2x^{4}+4[/tex] are polynomials.
