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If the statements "xy" and "yz" must be true, it implies that both products are non-zero. This suggests that both x and y must be non-zero for "xy" to hold, and both y and z must also be non-zero for "yz" to be true. Therefore, it can be concluded that y must be non-zero and that x and z can take any values as long as they do not contradict the conditions of the statements.

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2w ago

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