x^2-6x+1=0
http://chart.apis.google.com/chart?cht=tx&chl=x^2-6x+1=0
$x^2-6x+1=0$
x=\frac{a}{b}
$x=\frac{a}{b}$
I=

x^2-6x+1=0
http://chart.apis.google.com/chart?cht=tx&chl=x%5E2%2D6x%2B1%3D0
$x^2-6x+1=0$
x:高さ
$x = \frac{- b \pm \sqrt{b^{2} - 4 a c}}{2 a}$