Hello, I'm new here.

I have a problem with understanding this little equation:

According to WolframAlpha, the solutions are:

I can understand the first two solutions, since this equation can be written like this:

And I just don't know how to deal with the following equation:

Apparently, the solutions are:

and:

But how do I go from that to this?:

Please give me a step by step solution, if you can.

Uhmm... I just got it, somehow seeing it on screen made it simpler, I'm sorry to bother you.

It is of course:

You may delete this topic, sorry for the fuss.

Thanks,

Moon