2 x2 - 3x + 1 = 0 formula general?

<img src="https://tex.z-dn.net/?f=x%20%3D%20%20%5Cfrac%7B-b%2B-%20%5Csqrt%7B%20b%5E%7B2%7D%20-4ac%7D%20%7D%7B2a%7D%20" /> a b c

<img src="https://tex.z-dn.net/?f=2%20x%5E%7B2%7D%20-3x%20%2B1%20%3D%200" />

a = + 2

b = - 3

c = + 1

<img src="https://tex.z-dn.net/?f=x%20%3D%20%20%5Cfrac%7B-%28-3%29%2B-%20%5Csqrt%7B%20-3%5E%7B2%7D%20-4%282%29%28%2B1%29%7D%20%7D%7B2%282%29%7D%20" />

<img src="https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B%2B3%2B-%20%5Csqrt%7B%209%20-8%7D%20%7D%7B4%7D" />

<img src="https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B%2B3%2B-%20%5Csqrt%7B%201%7D%20%7D%7B4%7D" />

<img src="https://tex.z-dn.net/?f=x1%20%3D%20%5Cfrac%7B%2B3%2B%20%7B%201%7D%20%7D%7B4%7D%20%3D%20%20%5Cfrac%7B4%7D%7B4%7D%20%3D%201" />

<img src="https://tex.z-dn.net/?f=x1%20%3D%20%5Cfrac%7B%2B3-%20%7B%201%7D%20%7D%7B4%7D%20%3D%20%20%5Cfrac%7B2%7D%7B4%7D%20%3D%20%20%5Cfrac%7B1%7D%7B2%7D%20" />

Listo!