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-3 \\leq x \\leq 5

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-2 \\leq x \\leq 4

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-1 \\leq x \\leq 3

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Problema: Determine todos os valores de x para os quais \\\\sqrt{5 - x} \\leq 2.

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57. (UFRGS-RS) Na promoção de um produto cujo custo unitário é de R$ 5,75 se lê: \"Leve 3, pague 2\". Usando as condições da promoção, a economia máxima que poderá ser feita na compra de 188 itens deste produto é:

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Comentários