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My question is: Solve $\sqrt{x^2 +2x + 1}-\sqrt{x^2-4x+4}=3$

I deduced that:$LHS= x+1-(x-2)$

I am unable to solve this equation. I would like to get some hints to solve it.

  • 0
    By "whole root" do you mean square root, as in $\sqrt{x^2+2x+1}-\sqrt{x^2-4x+4}=3$?2012-06-04
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    Yes i meant the square root2012-06-04
  • 0
    like the one posted by André Nicolas2012-06-04
  • 0
    Abstract duplicate of [this recent question](http://math.stackexchange.com/questions/98157) and [this one.](http://math.stackexchange.com/questions/153818)2012-06-04
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    Please refer to : http://math.stackexchange.com/questions/167087/what-is-the-algorithm-for-solving-an-equation-like-this-one2012-07-07

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