Respuesta :

diene
1 = x^2 - x
x^2-x-1=0
quadratic formula:
[tex]x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} = \frac{-1 \pm \sqrt{1^2 - 4(1)(-1)}}{2} = \frac{-1 \pm \sqrt5}{2}[/tex]
the positive root is special because it's equal to the golden ratio

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