4y2 - 8y + 2 = 0?
4y2 - 8y + 2 = 0. Ecuación cuadrática.
En resumen
<img src="https://tex.z-dn.net/?f=%5Ctextup%7BLa%20ecuaci%5C%27on%20es%3A%7D%5C%5C4y%5E%7B2%7D-8y%2B2%3D0%5C%5C%5Ctextup%7BLuego%20identificando%20los.
Mejor respuesta
<img src="https://tex.z-dn.net/?f=%5Ctextup%7BLa%20ecuaci%5C%27on%20es%3A%7D%5C%5C4y%5E%7B2%7D-8y%2B2%3D0%5C%5C%5Ctextup%7BLuego%20identificando%20los.coeficientes%20se%20tiene%3A%7D%20%5C%5Ca%3D4%5C%5Cb%3D-8%5C%5Cc%3D2%5C%5C%5Ctextup%7BRecordando%20la%20f%5C%27ormula%20general%20%2Csustituyendo%20y%20resolviendo%20se%20tiene%3A%7D%5C%5Cx%3D%5Cfrac%7B-b%5Cpm%5Csqrt%7Bb%5E%7B2%7D-4ac%7D%7D%7B2%28a%29%7D%5C%5Cx%3D%5Cfrac%7B8%5Cpm%5Csqrt%7B%28-8%29%5E%7B2%7D-4%284%29%282%29%7D%7D%7B2%284%29%7D%5C%5Cx%3D%5Cfrac%7B8%5Cpm%5Csqrt%7B64-32%7D%7D%7B8%7D%5C%5Cx%3D%5Cfrac%7B8%5Cpm%5Csqrt%7B32%7D%7D%7B8%7D%5C%5Cx%3D%5Cfrac%7B8%5Cpm%5Csqrt%7B%2816%29%282%29%7D%7D%7B8%7D%5C%5Cx%3D%5Cfrac%7B8%5Cpm4%5Csqrt%7B2%7D%7D%7B8%7D%5C%5Cx_%7B1%7D%3D%5Cfrac%7B8%2B4%5Csqrt%7B2%7D%7D%7B8%7D%3D%5Cfrac%7B2%2B%5Csqrt%7B2%7D%7D%7B2%7D%5C%5Cx_%7B2%7D%3D%5Cfrac%7B8-4%5Csqrt%7B2%7D%7D%7B8%7D%3D%5Cfrac%7B2-%5Csqrt%7B2%7D%7D%7B2%7D" />
Saludos.