$4 x^{2}-20 x+25=(\ldots \ldots \ldots)^{2}$

Degree of the zero degree polynomial is

With the help of the remainder theorem, find the remainder when the polynomial $x^{3}+x^{2}-26 x+24$ is divided by each of the following divisors

$x+6$

Factorise

$169 x^{2}-625$

Write the degree of each of the following polynomials

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