Resolver por la fórmula general49x2 - 70x + 25 = 0?

Resolver por la fórmula general : 49x2 - 70x + 25 = 0<img src="https://tex.z-dn.net/?f=%20%5Cmathrm%7BPara%5C%3Auna%5C%3Aecuacion%5C%3Ade%5C%3Asegundo%5C%3Agrado%5C%3Ade%5C%3Ala%5C%3Aforma%5C%3A%7Dax%5E2%2Bbx%2Bc%3D0%5Cmathrm%7B%5C%3Alas%5C%3Asoluciones%5C%3Ason%5C%3A%7D%20" /><img src="https://tex.z-dn.net/?f=%20x_%7B1%2C%5C%3A2%7D%3D%5Cfrac%7B-b%5Cpm%20%5Csqrt%7Bb%5E2-4ac%7D%7D%7B2a%7D%20" /><img src="https://tex.z-dn.net/?f=%20%5Cmathrm%7BPara%5C%3A%7D%5Cquad%20a%3D49%2C%5C%3Ab%3D-70%2C%5C%3Ac%3D25%3A%5Cquad%20x_%7B1%2C%5C%3A2%7D%3D%5Cfrac%7B-%5Cleft%28-70%5Cright%29%5Cpm%20%5Csqrt%7B%5Cleft%28-70%5Cright%29%5E2-4%5Ccdot%20%5C%3A49%5Ccdot%20%5C%3A25%7D%7D%7B2%5Ccdot%20%5C%3A49%7D%20" /><img src="https://tex.z-dn.net/?f=%20x_%7B1%2C%5C%3A2%7D%3D%5Cfrac%7B-%5Cleft%28-70%5Cright%29%5Cpm%20%5Csqrt%7B0%7D%7D%7B2%5Ccdot%20%5C%3A49%7D%3D%5Cfrac%7B-%5Cleft%28-70%5Cright%29%7D%7B2%5Ccdot%20%5C%3A49%7D%3D%5Cfrac%7B5%7D%7B7%7D%20" /><img src="https://tex.z-dn.net/?f=%20%5Cmathrm%7BLa%5C%3Asolucion%5C%3Afinal%5C%3Aa%5C%3Ala%5C%3Aecuacion%5C%3Ade%5C%3Asegundo%5C%3Agrado%5C%3Aes%3A%7D%20" /><img src="https://tex.z-dn.net/?f=%20x%3D%5Cfrac%7B5%7D%7B7%7D%20" />.