Factorize the following polynomial: $p(x) = 25x^2 - 40x + 16$.

If $x+4$ is a factor of the polynomial $x^{2}+7x+m$,then $m = $ . . . . . .

If one zero of the quadratic polynomial $x^{2}+3x+k$ is $2$,then the value of $k$ is

Find the zeroes of the following polynomial by the factorisation method and verify the relationship between the zeroes and the coefficients of the polynomial:
$y^{2}+\frac{3}{2} \sqrt{5} y-5$

If the zeros of the cubic polynomial $p(x) = ax^3 + bx^2 + cx + d$ $(a \neq 0, a, b, c, d \in R)$ are $\alpha, \beta,$ and $\gamma$,then $\alpha + \beta + \gamma = \ldots$

If $-2$ is a zero of the cubic polynomial $p(x) = x^3 + 6x^2 + 11x + 6$,then find the remaining zeros of $p(x)$.