BobKlein

Nonsense. 1s and 0s

Let math ax^2-bx+c=0. math Then math \frac{x^2}{a}-\frac{b}{a}x+\frac{c}{a}=0. math

Completing the square, we get: math \\ \frac{x^2}{a}-\frac{b}{a}x=-\frac{c}{a} \\ \frac{x^2}{a}-\frac{b}{a}x+\left(\frac{-b}{2a}\right)^2=-\frac{c}{a}+\left(\frac{-b}{2a}\right)^2 \\ \left(x-\frac{b}{2a}\right)^2=-\frac{c}{a}+\left(\frac{-b}{2a}\right)^2 \\ x-\frac{b}{2a}=\pm \sqrt{-\frac{c}{a}+\left(\frac{-b}{2a}\right)^2} \\ x=\frac{b}{2a} \pm \sqrt{-\frac{c}{a}+\left(\frac{-b}{2a}\right)^2} \\ x=\frac{b\pm \sqrt{b^2-4ac}}{2a} math

Darn. Somehow my sign is all wopperjawed. What happened? Can someone edit this to fix?

Maybe I should stick to

math \overline{AB} math

and

math \triangle ABC math



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