Question 1091878

Tan 3x = 3 tan X - tan^3 X / 1 - 3 tan^2 x
<pre>Why do you people <b>REFUSE to use PARENTHESES</b> so your math problems won't be AMBIGUOUS?
Do you think someone is going to take the time to decipher your problem correctly? Also, shouldn't this math problem come with a QUESTION?
Are we also supposed to be PSYCHIC and determine what the question is?