Find the zero of the polynomial in each of the following cases

$p(x)=\frac{2}{3} x+\frac{5}{4}$

Classify the following as a constant, linear,quadratic and cubic polynomials:

$4-5 y^{2}$

By remainder Theorem find the remainder, when $p(x)$ is divided by $g(x),$ where

$p(x)=x^{3}-6 x^{2}+2 x-4, \quad g(x)=1-\frac{3}{2} x$

The following expressions are polynomials? Justify your answer:

$1-\sqrt{5 x}$

Expand

$(11 x+18)(11 x-18)$