Question 330950
{{{((x^2-9)(x))/((x-3)(x+9))=((x-3)(x+3)x)/((x-3)(x+9))}}}
 {{{((x^2-9)(x))/((x-3)(x+9))=(cross(x-3)(x+3)x)/(cross(x-3)(x+9))}}}
 {{{((x^2-9)(x))/((x-3)(x+9))=(x(x+3))/(x+9)}}}