Find the zeroes of the polynomial in each of the following:
$g(x) = 3 - 6x$

Classify the following polynomial as a polynomial in one variable,two variables,etc.
$y^{3}-5y$

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: $\sqrt{3} x^{2}+\pi x-9$

Factorise the following:
$9 x^{2}+4 y^{2}+16 z^{2}+12 x y-16 y z-24 x z$

Find the zero of the polynomial in the following case:
$q(y) = \pi y + 3.14$

Factorise $25 x^{2}+9 y^{2}+64+30 x y-48 y-80 x$.