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A) <img src="https://tex.z-dn.net/?f=%28-6%29%2A%28-6%29%2B%5Cfrac%7B-6%7D%7B-2%7D%20-%288%29%2A%28-3%29%5C%5C%5C%5C%28-6%29%2A%28-6%29%2B3%20-%288%29%2A%28-3%29%5C%5C36%2B3%2B24%5C%5C63%5C%5C%5C%5C" />B)<img src="https://tex.z-dn.net/?

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Losf5la
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A) <img src="https://tex.z-dn.net/?f=%28-6%29%2A%28-6%29%2B%5Cfrac%7B-6%7D%7B-2%7D%20-%288%29%2A%28-3%29%5C%5C%5C%5C%28-6%29%2A%28-6%29%2B3%20-%288%29%2A%28-3%29%5C%5C36%2B3%2B24%5C%5C63%5C%5C%5C%5C" />B)<img src="https://tex.z-dn.net/?f=%5Cfrac%7B-12%7D%7B4%7D%20%2B%28-8%29%2A%28-8%29-%28-3%29%2A%28-7%29%5C%5C%5C%5C-3%20%2B64-21%5C%5C40%5C%5C%5C%5C" />Saludos!