<PRE><B>Question 1164405</B>
&lt;br&gt;
Tutor @ikleyn answered the question you INTENDED to ask; and she answered it well.&lt;br&gt;
On the other hand, answering the question you DID ask is trivial.&lt;br&gt;
The functions&lt;br&gt;
{{{sqrt(x+1/x-1)}}}&lt;br&gt;
and&lt;br&gt;
{{{sqrt(x+1)/sqrt(x-1)}}}&lt;br&gt;
are not even remotely similar.&lt;br&gt;
If you are asking a question on a topic like this, you should have enough knowledge of math to know that sometimes parentheses are required to show an expression correctly.&lt;br&gt;
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