Question 293342
x^3-18x^2+81x
<s>9x(x^2-2X+9)</s>
<s>9x(x-3)(x+3)</s>
?
<pre>
You cannot factor out 9x because 9x is not
a factor of the first term {{{x^3}}}

{{{x^3-18x^2+81x}}}
{{{x(x^2-18x+81)}}}
{{{x(x-9)(x-9)}}}
{{{x(x-9)^2}}}

Edwin</pre>