Question 294209
<pre><font size = 4 color = "indigo"><b>
{{{-3xy^3z + 6x^2yz^2}}}

First reverse the terms so there won't be a negative stuck out front

{{{6x^2yz^2-3xy^3z}}}

You can take out a 3.
You can also take out the smallest power of each letter that
occurs in both terms:
The smallest exponent of each of the letters is 1,
So you can take out {{{3x^1y^1z^1}}} or just {{{3xyz}}}

{{{3xyz(2xz-y^2)}}}

That's it!

Edwin</pre>