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Thread: Quadratic equations....solve for x:

  1. February 20th 2010, 08:02 AM #1
    snigdha
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    Quadratic equations....solve for x:

    (1 + x + x^2)/(1 – x + x^2) = [62(1 + x)]/[63(1 – x)]
    Last edited by snigdha; February 20th 2010 at 08:03 AM. Reason: typing error!
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  2. February 20th 2010, 08:11 AM #2
    Grandad
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    Hello snigdha
    Quote Originally Posted by snigdha View Post
    (1 + x + x^2)/(1 – x + x^2) = [62(1 + x)]/[63(1 – x)]
    Re-write the equation as:
    63(1-x)(1+x+x^2)=62(1+x)(1-x+x^2)
    Remove brackets and simplify, to:
    125x^3=1

    \Rightarrow x = \tfrac15
    Grandad
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