En resumen

<img src="https://tex.z-dn.net/?f=4X%5E2%2B5X-6%3D0" /> Primera X<img src="https://tex.z-dn.net/?f=%5Cfrac%7B-5%2B%5Csqrt%7B5%5E2-4%5Ccdot%20%5C%3A4%5Cleft%28-6%5Cright%29%7D%7D%7B2%5Ccdot%20%5C%3A4%7D" /><img src="https://tex.z-dn.net/?

Mejor respuesta

5

<img src="https://tex.z-dn.net/?f=4X%5E2%2B5X-6%3D0" />

Primera X<img src="https://tex.z-dn.net/?f=%5Cfrac%7B-5%2B%5Csqrt%7B5%5E2-4%5Ccdot%20%5C%3A4%5Cleft%28-6%5Cright%29%7D%7D%7B2%5Ccdot%20%5C%3A4%7D" /><img src="https://tex.z-dn.net/?f=%3D%5Cfrac%7B-5%2B%5Csqrt%7B5%5E2%2B4%5Ccdot%20%5C%3A4%5Ccdot%20%5C%3A6%7D%7D%7B2%5Ccdot%20%5C%3A4%7D" /><img src="https://tex.z-dn.net/?f=%3D%5Cfrac%7B-5%2B%5Csqrt%7B121%7D%7D%7B2%5Ccdot%20%5C%3A4%7D" /><img src="https://tex.z-dn.net/?f=%3D%5Cfrac%7B-5%2B%5Csqrt%7B121%7D%7D%7B8%7D%3D%5Cfrac%7B-5%2B11%7D%7B8%7D%3D%5Cfrac%7B6%7D%7B8%7D%3D%5Cfrac%7B3%7D%7B4%7D" />

Segunda X<img src="https://tex.z-dn.net/?f=%5Cfrac%7B-5-%5Csqrt%7B5%5E2-4%5Ccdot%20%5C%3A4%5Cleft%28-6%5Cright%29%7D%7D%7B2%5Ccdot%20%5C%3A4%7D" /><img src="https://tex.z-dn.net/?f=%3D%5Cfrac%7B-5-%5Csqrt%7B5%5E2%2B4%5Ccdot%20%5C%3A4%5Ccdot%20%5C%3A6%7D%7D%7B2%5Ccdot%20%5C%3A4%7D" /><img src="https://tex.z-dn.net/?f=%3D%5Cfrac%7B-5-%5Csqrt%7B121%7D%7D%7B2%5Ccdot%20%5C%3A4%7D" /><img src="https://tex.z-dn.net/?f=%3D%5Cfrac%7B-5-%5Csqrt%7B121%7D%7D%7B8%7D%3D%5Cfrac%7B-5-11%7D%7B8%7D%3D%5Cfrac%7B-16%7D%7B8%7D%3D-2" />

Por lo tanto las respuestas son : X1 = <img src="https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B4%7D" />X2 = [img = 10].