Question 145798
{{{(x^2-1)/(x + 1)}}} Start with the given expression.



{{{((-3)^2-1)/(-3 + 1)}}} Plug in {{{x=-3}}}.



{{{(9-1)/(-3 + 1)}}} Square -3 to get 9.



{{{(8)/(-3 + 1)}}} Subtract 1 from 9 to get 8.



{{{(8)/(-2)}}} Add -3 to 1 to get -2.



{{{-4}}} Reduce




So {{{(x^2-1)/(x + 1)=-4}}} if {{{x=-3}}}