Question 370110
{{{(x^2 - 4x)/(x^2 - 5x - 36)}}}
This fraction will not simplify. To simplify a fraction you factor the numerator and denominator and reduce the fraction, if they have factors in common.<br>
Factoring your fraction:
{{{(x(x-4))/((x-9)(x+4))}}}
As you can see, there are no factors to cancel. (I suspect that one of the minus signs should be a plus sign.)