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<img src="https://tex.z-dn.net/?f=%204x%5E%7B2%7D%20%3D%2032x-64" /> <img src="https://tex.z-dn.net/?f=%204x%5E%7B2%7D%20-%2032x%2B64%20%3D%200%0A" /> : 4 <img src="https://tex.z-dn.net/?

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Nicky137
10

<img src="https://tex.z-dn.net/?f=%204x%5E%7B2%7D%20%3D%2032x-64" />

<img src="https://tex.z-dn.net/?f=%204x%5E%7B2%7D%20-%2032x%2B64%20%3D%200%0A" /> : 4

<img src="https://tex.z-dn.net/?f=%20x%5E%7B2%7D%20%20-8x%2B16%20%3D%200" />

x - 4

x - 4 - 4x - 4x = - 8x

(x - 4)(x - 4) = 0

x - 4 = 0

x = - 4

CS = ( - 4).