Question

How do you find ALL restricted values of the following rational expressions: `-2/x`?

1. List item

Answer 1

`x != 0`

Explanation:

The only restriction in this case is a value of `x` which will make the denominator equal to 0.

As the denominator contains only `x`, the restriction is:

`x != 0`. The negative sign in the front does not matter at all.

The fraction can be positive or negative.

If you are working with a rational number and need a rational answer, `x` may obviously also not be an irrational or non-real number.