Find the value of each of the following polynomials at the indicated value of variables

$p(x)=x^{2}+5 x-24$ at $x=3$

Verify whether the following are True or False:

$-3$ is a zero of $y^{2}+y-6.$

Factorise $: 121 x^{2}-289 y^{2}$

Write whether the following statements are True or False. Justify your answer.

$\frac{1}{\sqrt{5}} x^{\frac{1}{2}}+1$ is a polynomial

Dividing $p(x)=x^{2}+12 x+36$ by $(x+5)$ the remainder is.......

Factorise the following:

$9 x^{2}-12 x+4$