Question 687786
Do you mean
{{{(x^2+4x-21)/(x^3-49x)}}} ??
...
Factor both the numerator and denominator
{{{((x+7)(x-3))/(x(x^2-49)) = ((x+7)(x-3))/(x(x+7)(x-7)) = (x-3)/(x(x-7)) = 
highlight_green((x-3)/(x^2-7x))}}}
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