# How does this simplification work?

Tags:
1. Dec 19, 2017

### rishi kesh

Please check the image below. My algebra is bit rusty. Please explain the second step where the common factor is taken out.

Last edited by a moderator: Dec 19, 2017
2. Dec 19, 2017

### Staff: Mentor

$\sqrt{x^2 + x} = \sqrt{x^2 + \frac{x^2}x} = \sqrt{x^2(1 + \frac 1 x)}$
Can you work out the rest?

3. Dec 19, 2017

### rishi kesh

That really helped.i know how to do rest.thanks:D