Factorise :

$x^{3}-6 x^{2}+11 x-6$

Write the following cubes in expanded form

$(7 x-4 y)^{3}$

Factorise

$x^{3}+12 x^{2}+39 x+28$

Find $p(1), p(2)$ and $p(4)$ for each of the following polynomials

$p(x)=x^{3}+9 x^{2}+23 x+15$

Which of the following expressions is a polynomial, state the reason ? If an expression is polynomial, state whether it is a polynomial in one variable or not

$x^{2}-15 x+50$