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

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Dec 8, 2016

$x \ne 0$

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:

$x \ne 0$. 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.