Which of the following expressions are polynomials in one or more variable(s)? Justify your answer.
Important Questions on Polynomials
Which of the following expressions are polynomials in one or more variable(s)? Justify your answer.

Which of the following expressions are polynomials in one or more variable(s)? Justify your answer.

Find the coefficient of in the following polynomials.

Find the coefficient of in the following polynomials.

Find the coefficient of in the following polynomials.

Find the coefficient of in the following polynomials.

Find the coefficient of in the following polynomials.

Find the coefficient of $x$ in the expansion of . 