Question

simplify: 2a+2/a^2-1

Answer 1

simple take common factors out in numerator

Answer 2

In denominator use identity

\[a^2-b^2=(a+b)(a-b)\]

Answer 3

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

Answer 4

@gorv giving direct worked out answers is against openstudy code of conduct refer http://openstudy.com/code-of-conduct

Answer 5

Instead help the asker get to the solution being a guide along the process

Answer 6

okay to the answer would be 2/a-1 right?