Question

how do you simplify this fraction while fiinding the excluded value? -x/4x-8

Answer 1

\[ \frac{-x}{4x-8} \] ?
you can't simplify very much. Maybe factor out a 4 to get
\[ \frac{-x}{4(x-2)} \]
and multiply top and bottom by -1 to get
\[ \frac{x}{4(2-x)} \]

to find the excluded values of x, Exclude any x value that makes the denominator zero, because divide by zero is not allowed