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Math Help - Radical equation

  1. #1
    Super Member dhiab's Avatar
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    Radical equation

    Solve in R this equation :
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  2. #2
    Rhymes with Orange Chris L T521's Avatar
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    Quote Originally Posted by dhiab View Post
    Solve in R this equation :
    Square both sides to get x^4-6x^2+9=3-x\implies x^4-6x^2+x+6=0. Clearly, x=-1 is a solution. With this, do some long division, and see if you can come up with additional solutions.

    I hope this helps.
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  3. #3
    Super Member dhiab's Avatar
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    Quote Originally Posted by Chris L T521 View Post
    Square both sides to get x^4-6x^2+9=3-x\implies x^4-6x^2+x+6=0. Clearly, x=-1 is a solution. With this, do some long division, and see if you can come up with additional solutions.

    I hope this helps.
    Hello:Clearly x=2 is solution with second equation and no the first. I'can divide by : (x-1)(x-2)
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  4. #4
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    I know of a neat way for solving this type of equations.
    You need to do some simplication usually before you get the equation for x and u after the subtraction.
    Attached Thumbnails Attached Thumbnails Radical equation-neat.gif  
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