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(x^{2} - 1)/(x - 1) = 5

**Comments**

The answer is 4

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**EXPLANATION:**

(x^{2} - 1) = (x^{2} -1^{2}) = (x - 1)(x + 1)

(x - 1)(x + 1)/(x - 1) = 5

(x - 1) in the numerator will cancel out (x - 1) in the denominator

Thus, the equation becomes:

(x + 1) = 5

x = 5 - 1

x = 4

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