# If x=-3 what is the value of (x^2-1)/(x+1)?

May 29, 2018

See a solution process below:

#### Explanation:

To find the value of the expression when $x = - 3$ substitute $\textcolor{red}{- 3}$ for each occurrence of $\textcolor{red}{x}$ in the expression and then calculate the result:

$\frac{{\textcolor{red}{x}}^{2} - 1}{\textcolor{red}{x} + 1}$ becomes:

$\frac{{\left(\textcolor{red}{- 3}\right)}^{2} - 1}{\textcolor{red}{- 3} + 1} \implies$

$\frac{9 - 1}{-} 2 \implies$

$\frac{8}{-} 2 \implies$

$- 4$