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31 December, 18:09

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

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  1. 31 December, 19:31
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    A fraction is undefined when the denominator equals 0 so we do this:

    x-5≥0

    x≥5

    This tells us that any number less than 5 will make the fraction undefined
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