Me pueden ayudar x fas lo de la foto?

<img src="https://tex.z-dn.net/?f=2%5Cleft%28x-3%5Cright%29%5E2-3%5Cleft%28x%2B1%5Cright%29%5E2%2B%5Cleft%28x-5%5Cright%29%5Cleft%28x-3%5Cright%29%2B4%5Cleft%28x%5E2-5x%2B1%5Cright%29%3D4x%5E2-12" />

<img src="https://tex.z-dn.net/?f=%5Cmathrm%7BAplicar%5C%3Ala%5C%3Asiguiente%5C%3Aregla%5C%3Ade%5C%3Aproductos%5C%3Anotables%7D%3A%5Cquad%20%5Cleft%28a-b%5Cright%29%5E2%3Da%5E2-2ab%2Bb%5E2" />

<img src="https://tex.z-dn.net/?f=Usar%3A%5Cleft%28a%2Bb%5Cright%29%5Cleft%28c%2Bd%5Cright%29%3Dac%2Bad%2Bbc%2Bbd" />

<img src="https://tex.z-dn.net/?f=2%5Cleft%28x%5E2-6x%2B9%5Cright%29-3%5Cleft%28x%2B1%5Cright%29%5E2%2B%5Cleft%28x-5%5Cright%29%5Cleft%28x-3%5Cright%29%2B4%5Cleft%28x%5E2-5x%2B1%5Cright%29%3D4x%5E%7B2%7D%20-12" />

<img src="https://tex.z-dn.net/?f=2x%5E2-12x%2B18-3x%5E2-6x-3%2Bx%5E2-8x%2B15%2B4x%5E2-20x%2B4%3D4x%5E2-12" />

<img src="https://tex.z-dn.net/?f=4x%5E2-46x%2B34%3D4x%5E2-12" />

<img src="https://tex.z-dn.net/?f=%5Cmathrm%7BRestar%5C%3A%7D34%5Cmathrm%7B%5C%3Ade%5C%3Aambos%5C%3Alados%7D" />

<img src="https://tex.z-dn.net/?f=4x%5E2-46x%2B34-34%3D4x%5E2-12-34" />

<img src="https://tex.z-dn.net/?f=4x%5E2-46x%3D4x%5E2-46" />

<img src="https://tex.z-dn.net/?f=%5Cmathrm%7BRestar%5C%3A%7D4x%5E2%5Cmathrm%7B%5C%3Ade%5C%3Aambos%5C%3Alados%7D" />

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[img = 14].