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10 September, 03:50

3. Simplify 2a + 2 / a^2 - 1

A) 2 / a - 1

B) 2a + 2 / a^2 - 1

C) - 2

D) a + 1 / a - 1

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Answers (1)
  1. 10 September, 07:10
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    (2a + 2) / (a^2 - 1)

    (2 (a + 1)) / (a^2 - 1)

    (2 (a + 1)) / (a^2 - 1^2)

    (2 (a + 1)) / ((a + 1) (a - 1))

    2 / a - 1

    The answer is: 2/a - 1.
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