T² - 5t + 5 = 0 ayudaaa es que no entiendo nada : (?

Resolver

<img src="https://tex.z-dn.net/?f=%20t%5E2-5t%2B5%3D0%20" /><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%3D1%2C%5C%3Ab%3D-5%2C%5C%3Ac%3D5%3A%5Cquad%20t_%7B1%2C%5C%3A2%7D%3D%5Cfrac%7B-%5Cleft%28-5%5Cright%29%5Cpm%20%5Csqrt%7B%5Cleft%28-5%5Cright%29%5E2-4%5Ccdot%20%5C%3A1%5Ccdot%20%5C%3A5%7D%7D%7B2%5Ccdot%20%5C%3A1%7D%20" /><img src="https://tex.z-dn.net/?f=%20t_1%3D%5Cfrac%7B-%5Cleft%28-5%5Cright%29%2B%5Csqrt%7B%5Cleft%28-5%5Cright%29%5E2-4%5Ccdot%20%5C%3A1%5Ccdot%20%5C%3A5%7D%7D%7B2%5Ccdot%20%5C%3A1%7D%3D%5Cquad%20%5Cfrac%7B5%2B%5Csqrt%7B5%7D%7D%7B2%7D%3D3.61803%20" /><img src="https://tex.z-dn.net/?f=%20t_2%3D%5Cfrac%7B-%5Cleft%28-5%5Cright%29-%5Csqrt%7B%5Cleft%28-5%5Cright%29%5E2-4%5Ccdot%20%5C%3A1%5Ccdot%20%5C%3A5%7D%7D%7B2%5Ccdot%20%5C%3A1%7D%3D%5Cquad%20%5Cfrac%7B5-%5Csqrt%7B5%7D%7D%7B2%7D%3D1.38197%20" />.