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Thread: I need help to understand this algebraic fraction problem

  1. March 8th 2011, 12:00 PM #1
    Riazy
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    I need help to understand this algebraic fraction problem

    Hello the problem is stated on the uploaded paper

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  2. March 8th 2011, 12:08 PM #2
    e^(i*pi)
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    The key is recognising that the numerator is a perfect square:

    x^4+2x^2+1 = (x^2+1)^2


    note that 4x^2 + (x^4-2x^2+1) = x^4+2x^2+1
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  3. March 8th 2011, 12:17 PM #3
    Riazy
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    Ah thanks I get stuck at basic things although I am studying at uni <(-_-)>
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  4. March 8th 2011, 12:30 PM #4
    e^(i*pi)
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    Quote Originally Posted by Riazy View Post
    Ah thanks I get stuck at basic things although I am studying at uni <(-_-)>
    It's often the way, one forgets the basics when working on harder maths
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