Question 171485
The restricted values for rational expressions are based on the fact that you cannot divide by zero, so you must restrict any value for any variable in the denominator of a rational expression that would make the value of the denominator be zero.


{{{x-8/(x^2-x)}}}


First, set the denominator equal to zero and solve the resulting equation, if possible.


{{{x^2-x=0}}}


{{{x(x-1)=0}}}, hence, {{{x=0}}} or {{{x=1}}}


The solutions to this equation are the restricted values.