Classify the following as linear, quadratic or cubic polynomial

$x^{3}+2 x^{2}+3 x+2$

Factorise the following:

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

Determine the degree of each of the following polynomials:

$-10$

Factorise :

$84-2 r-2 r^{2}$

Write the following cubes in expanded form

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

Factors of $x^{2}-23 x+120$ are.........