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