Question

What is the least common denominator of

Answer 1

first answer is correct

Explanation:

hello

as we can write

`x^2-1=(x-1)(x+1)\\`

the least common denominator is

x(x-1)(x+1)

hope this helps

Answer 2

x + 1

x - 1

x

Explanation:

The denominators are as follows.

(x - 1)

x^2 - 1

x

=====

The second denominator is actually made of two factors.

x^2 - 1 =(x + 1)(x - 1)

So the least common denominator is

x + 1

x - 1

x

You do not count the x - 1 twice.