Question 1121560
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There is no one "right" way to factor an expression like this....<br>
{{{-3x^2+21x^(-5)}}} = ...<br>
{{{-3(x^2-7x^(-5))}}}  or
{{{3(-x^2+7x^(-5))}}}  or
{{{-3x^(-5)(x^7-7)}}}  or
{{{3x^2(-1+7x^(-7))}}} or
...<br>
If you were ever to run into a real problem where you had to factor an expression like this, the context of the problem might tell you what factorization would help you the most....