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

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1 Answer
Dec 8, 2016

Answer:

#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.