=
=
-x^2+x^2}{4-x}" alt="\frac{x-4}{x+4} * \frac{4x
-x^2+x^2}{4-x}" align="absmiddle" class="latex-formula"> =
}{4-x}" alt="\frac{x-4}{x+4} * \frac{4x
}{4-x}" align="absmiddle" class="latex-formula"> =
{x-4}{x+4} * -\frac{4x
}
{x-4}" alt="\frac
{x-4}{x+4} * -\frac{4x
}
{x-4}" align="absmiddle" class="latex-formula"> = -
{x+4}{4x
}
" alt="\frac
{x+4}{4x
}
" align="absmiddle" class="latex-formula">