Factorise the following:

$16 x^{2}+4 y^{2}+9 z^{2}-16 x y-12 y z+24 x z$

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 linear, quadratic or cubic polynomial

$4 x^{2}-49$

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

$4-5 y^{2}$

Find the zeroes of the polynomial:

$p(x)=(x-2)^{2}-(x+2)^{2}$