All expressions are polynomials, consisting of variables raised to non-negative integer powers. No radicals or variables in denominators are allowed, so the correct option is A, B, C, D, E, F.
A polynomial is an expression that consists of variables and coefficients, with the variables raised to non-negative integer powers. The coefficients can be any real or complex numbers.
A.
This expression is a polynomial because it consists of the variable x raised to the non-negative integer powers 3 and 2, and the coefficients -1, 5, and
.
B.
This expression is a polynomial because it consists of the variable x raised to the non-negative integer powers 4, 3, 2, and 1, and the coefficients 3/5, -18, -10, and 35.
C.
This expression is a polynomial because it consists of the variable $x$ raised to the non-negative integer powers 2 and -1, and the coefficients
, 3, -2, and 6.
D.
This expression is a polynomial because it consists of the variable x raised to the non-negative integer power 3, and the coefficients 3 and -9.
E.
This expression is a polynomial because it consists of the variable x raised to the non-negative integer power -2, and the coefficients 2, 5, and -3.
Therefore, the correct option is A, B, C, D, E, F.