For this problem enter matrices using bracket notation. So the matrix
$\left[\begin{array}{ccc} 2 &3 &-1\cr -2 &-5 &6 \end{array}\right]$
would be entered as [[2,3,-1],[-2,-5,6]].

Find an LDU factorization for
$\left[\begin{array}{cc} 1 &0\cr -6 &1 \end{array}\right]\left[\begin{array}{cc} 1 &5\cr 0 &-6 \end{array}\right]$
$L =$
$D =$
$U =$