Courses$)$

Reduce the given matrix.

$\left[\begin{array}{ccc}4& 8& 4\\ 2& 4& 2\\ 1& 2& 1\end{array}\right]$

What is the reduced form of the

$\left[\begin{array}{cc}?& ?\\ ?& ?\\ ?& ?\\ ?& ?\end{array}\right]$

$($Simplify your answers.$)$