Find $p(-2)$ for the polynomial $p(x)=5 x^{2}-11 x+3$

Write the following cubes in expanded form

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

If $x+1$ is a factor of $a x^{3}+x^{2}-2 x+4 a-9,$ find the value of $a$.

If $a+b+c=5$ and $a b+b c+c a=10,$ then prove that $a^{3}+b^{3}+c^{3}-3 a b c=-25.$

$x+1$ is a factor of the polynomial