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5 November, 00:08

Which of the following is equal to the rational expression when x≠5 or - 1?

(x-7) (x + 1)

(x + 1) (x - 5)

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  1. 5 November, 01:40
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    Answer: (x-7) / (x-5)

    The (x+1) terms divide and cancel out due to the rule that x/x = 1, when x is nonzero. In that rule, we can replace 'x' with any algebraic expression we want.
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