Question

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

Answer 1

See a solution process below:

Explanation:

To find the value of the expression when `x = -3` substitute `color(red)(-3)` for each occurrence of `color(red)(x)` in the expression and then calculate the result:

`(color(red)(x)^2 - 1)/(color(red)(x) + 1)` becomes:

`((color(red)(-3))^2 - 1)/(color(red)(-3) + 1) =>`

`(9 - 1)/-2 =>`

`8/-2 =>`

`-4`