Classify the following as a constant,linear,quadratic,or cubic polynomial:
$1+x+x^{2}$

Which of the following expressions is a polynomial? State the reason. If an expression is a polynomial,state whether it is a polynomial in one variable or not: $\sqrt{3} x^{2}+\pi x-9$

The degree of the zero polynomial is

Write the coefficient of $x^{2}$ in the following polynomial: $x^{3} + 27$.

By the Remainder Theorem,find the remainder when $p(x)$ is divided by $g(x)$,where $p(x) = x^{3} - 3x^{2} + 4x + 50$ and $g(x) = x - 3$.

Are the following expressions polynomials? Justify your answer:
$\frac{1}{x+1}$