# Math Help - [SOLVED] row coloum space

1. ## [SOLVED] row coloum space

Hey guys, just found this nice site and was wondering if someone can help me out? I need this done an there'll be a similar question on my exam tomorrow. I'm stuck on this question,

I don;t know the method. I think I gotta break it down a bit first but I'm not sure. Any takers?

$\begin{bmatrix}1&-1&2\\0&1&2\\0&0&0\\0&0&0\end{bmatrix}$