It's okay to post it, if you want; mostly, we're concerned with protecting final exam questions vs. quiz/practice questions.
For the most immediate help, you might like this: https://www.symbolab.com/solver/simplify-calculator
It will simplify an expression but give a step-by-step breakdown of one way to do it.
If you want to post the question, I'd recommend a new topic. If you click the little gear icon in the composing window here, you'll see a "hide details" option. That gives you this little bit of code:
[details=Summary]This text will be hidden[/details]
You can change
Summary to anything you want, and the test inside the two sets of brackets is what you want to hide.
So, for example, if I type:
[details=Spoiler alert!]Dorothy was in Kansas the whole time...or _was she_?[/details]
What everyone will see is this (click anywhere to see the hidden text):
Dorothy was in Kansas the whole time...or was she?