Question

Simplify. start fraction 2 a plus 2 over a squared minus 1 end fraction
A. start fraction 2 over a minus 1 end fraction
B. start fraction 2 a plus 2 over a squared minus 1 end fraction
C. –2
D. start fraction a plus 1 over a minus 1 end fraction

Answer 1

We can simplify this expression by factoring the denominator:

$$\frac{2a+2}{a^2-1} = \frac{2(a+1)}{(a+1)(a-1)} = \frac{2}{a-1}$$

Therefore, the answer is A. $\frac{2}{a-1}$.