Limits

[forest dome]

1. Wait patiently for a helper to come along.
2. Once someone helps you, say thank you and close the thread with:

+close

3. Feel free to nominate the person for helper of the week in #helper-nominations

[lethal lark]

Probably just start simplifying like crazy, you know that $[x]=-1$, $|x|=-x$, and $$[x^r]=\begin{cases} 0, r \text{ even} \ -1, r \text{ odd} \end{cases}$$

[limpid spear]

civil_service_pigeon