Without actually calculating the cubes, find the value of $48^{3}-30^{3}-18^{3}$

Verify whether the following are True or False:

$0$ and $2$ are the zeroes of $t^{2}-2 t.$

Write the degree of each of the following polynomials

$a x^{3}+b x^{2}+c x+d$

Factorise

$x^{2}+4 y^{2}+9 z^{2}-4 x y-12 y z+6 z x$

Without finding the cubes, factorise

$(x-2 y)^{3}+(2 y-3 z)^{3}+(3 z-x)^{3}$

State whether each of the following statements is true or false

$x^{2}-5 x+4$ is a linear polynomial.