If the product of the zero of the polynomial $\left(x^{2}-4 x+k\right)$ is 3 . Find the value of $k$.

using the relationship between the zeroes of he quadratic polynomial.

Product of zeroes $=\frac{\text { constant term }}{\text { coefficient of } x^{2}}$

$\Rightarrow 3=\frac{k}{1}$

$\Rightarrow \mathrm{k}=3$