Which represents all the values of x that make the rational expression 2x-4 over x-5 undefined?

x = 2
x = 5
x = –5 or x = –2
x = 2 or x = 5

For this case we have the following expression:

By definition, we have the expression undefined when the denominator is 0.

So:

Adding 5 to both sides of the equation:

Thus, the expression is undefined when

Option B

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step-by-step explanation:

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step-by-step explanation:

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