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How does this simplification work?

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  1. Dec 19, 2017 #1
    Please check the image below. My algebra is bit rusty. Please explain the second step where the common factor is taken out. 1513701490469-874305.jpg
     
    Last edited by a moderator: Dec 19, 2017
  2. jcsd
  3. Dec 19, 2017 #2

    Mark44

    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?
     
  4. Dec 19, 2017 #3
    That really helped.i know how to do rest.thanks:D
     
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