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16 February, 10:58

For what value of x is the rational expression below undefined? X-1 / (x-3) (x+1)

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  1. 16 February, 12:47
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    Answer: 3 and - 1

    Step-by-step explanation:

    The denominator cannot be zero.

    ⇒ (x - 3) (x + 1) ≠ 0

    ⇒ x - 3 ≠ 0 and x + 1 ≠ 0

    ⇒ x ≠ 3 and x ≠ - 1
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