# Can't solve a find the missing number question

I found the following question on the TORN forums, and haven't been able to solve it.

$$\begin{matrix}2&9&4&4\\6&0&3&0\\1&3&0&1\\0&5&7&3\\x&8&4&8\end{matrix}$$

My attempt so far

I can see that $29$ and $44$ add to $73$, but I didn't get anywhere. I tried squaring the numbers, adding, squaring and adding, and a few other things, but I can't solve.

Can anyone help?

• Usually we like some frame of reference from puzzles that you did not create. As in, can you provide a source? Also, in the future, try to hide your attempts as this should be a question to other users, instead of an open discussion on your progress. – Jason V Mar 5 '18 at 13:30
• @JasonV I found this here. How do I hide my attempts? – Buddha Mar 5 '18 at 13:31
• see my revision. :) – Jason V Mar 5 '18 at 13:32
• @JasonV Okay. Done. – Buddha Mar 5 '18 at 13:46