X² + 2 (m - 1) x + m² = 0?

<img src="https://tex.z-dn.net/?f=x%5E2%2B2%5Cleft%28m-1%5Cright%29x%2Bm%5E2%3D0" />

<img src="https://tex.z-dn.net/?f=%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%3A" />

<img src="https://tex.z-dn.net/?f=x_%7B1%2C%5C%3A2%7D%3D%5Cfrac%7B-b%5Cpm%20%5Csqrt%7Bb%5E2-4ac%7D%7D%7B2a%7D" />

<img src="https://tex.z-dn.net/?f=%5Cmathrm%7BPara%5C%3A%7D%5Cquad%20a%3D1%2C%5C%3Ab%3D2m-2%2C%5C%3Ac%3Dm%5E2%3A%5Cquad%20x_%7B1%2C%5C%3A2%7D%3D%5Cfrac%7B-%5Cleft%282m-2%5Cright%29%5Cpm%20%5Csqrt%7B%5Cleft%282m-2%5Cright%29%5E2-4%5Ccdot%20%5C%3A1m%5E2%7D%7D%7B2%5Ccdot%20%5C%3A1%7D" />

<img src="https://tex.z-dn.net/?f=%20x_%7B1%7D%3D%5Csqrt%7B-2m%2B1%7D%2B1-m%2C%5C%3A%20x_%7B2%7D%3D1-m-%5Csqrt%7B-2m%2B1%7D" />.