For what value of $m$ is $x^{3}-2 m x^{2}+16$ divisible by $x+2 ?$
Factorise the following:
$25 x^{2}+16 y^{2}+4 z^{2}-40 x y+16 y z-20 x z$
Write the following cubes in expanded form
$(3 a+5 b)^{3}$
Verify whether $3$ and $5$ are zeros of the polynomial $x^{2}-x-6$ or not.
Factorise the following quadratic polynomials by splitting the middle term
$x^{2}-4 x-77$