Question

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

Answer 1

First factorise 2a+2 and a^2-1
since 2 is common factor in 2a+2
u can take t out. Then u wil get
2(a+1)
a^2-1 can be written as (a-1)(a+1)
a^2-b^2=(a-b)(a+b)
Using both of them