2x al cuadrado menos 3x - 2x menor igual que cero?

<img src="https://tex.z-dn.net/?f=%7B2x%5E2-3x-2%3D0%5C%20%5C%20%5C%20%20%5C%20%5C%20%20descomponemos%5C%20el%5C%20-3x%7D%5C%5C%5C%5C%7B2x%5E2-4x%2Bx-2%3D0%5C%20%5C%20%5C%20%5C%20agrupamos%20%7D%5C%5C%5C%5C%7B%282x%5E2-4x%29%2B%28x-2%29%3D0%5C%20%5C%20%5C%20%5C%20sacamos%5C%20factor%5C%20com%5C%27un%7D%5C%5C%5C%5C%7B2x%28x-2%29%2B1%28x-2%29%3D0%7D%5C%5C%5C%5C%7B%282x%2B1%29%28x-2%29%3D0%7D%5C%5C%5C%5C%5C%5C%5C%5C%7B2x%2B1%3D0%7D%5C%5C%5C%5C%7B%5Cboxed%7Bx_1%3D-%5Cfrac%7B1%7D%7B2%7D%7D%7D%5C%5C%5C%5C%5C%5C%5C%5C%7Bx-2%3D0%7D%5C%5C%5C%5C%7B%5Cboxed%7Bx_2%3D2%7D%7D" />

Salu2!

: )

Wellington.