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Math Help - How would I expand this bracket...

  1. #1
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    How would I expand this bracket...

    I want to expand it, to get rid of the square root so i can later integrate it.. would the 'x' go to x^\frac{1}{2} in the equation:

    (\sqrt{x}+1)^2
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  2. #2
    Rhymes with Orange Chris L T521's Avatar
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    Quote Originally Posted by MikeNZ View Post
    I want to expand it, to get rid of the square root so i can later integrate it.. would the 'x' go to x^\frac{1}{2} in the equation:

    (\sqrt{x}+1)^2
    If you expand this, you should get \left(\sqrt{x}+1\right)^2=\left(\sqrt{x}\right)^2+  2\left(\sqrt{x}\right)\left(1\right)+\left(1\right  )^2=x+2\sqrt{x}+1...
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  3. #3
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    Quote Originally Posted by MikeNZ View Post
    I want to expand it, to get rid of the square root so i can later integrate it.. would the 'x' go to x^\frac{1}{2} in the equation:

    (\sqrt{x}+1)^2
     (\sqrt{x}+1)^2 =  (\sqrt{x}+1) (\sqrt{x}+1) = ....

    This expression will have a \sqrt{x} in it, so when integrating it you should note that \sqrt{x} = x^{1/2}
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  4. #4
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    Ahh ok, thanks you two!
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  5. #5
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    Quote Originally Posted by MikeNZ View Post
    I want to expand it, to get rid of the square root so i can later integrate it.. would the 'x' go to x^\frac{1}{2} in the equation:

    (\sqrt{x}+1)^2

    Expansion is:

    (\sqrt{x}+1)^2 = x +2\sqrt{x}+1

    And yes

    \sqrt{x}=x^\frac{1}{2}
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  6. #6
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    I was a little late on the scene!
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  7. #7
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    Quote Originally Posted by pickslides View Post
    Expansion is:

    (\sqrt{x}+1)^2 = x +2\sqrt{x}+1

    And yes

    \sqrt{x}=x^\frac{1}{2}

    Ohhhh now i FULLY get it! Must of just had to read it over that one extra time. THANK YOU!
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