Question

3. Simplify 2a + 2 / a^2 – 1
A) 2 / a – 1
B) 2a + 2 / a^2 – 1
C) -2
D) a + 1 / a – 1

Answer 1

(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.