Find all values of i (the Greek letter lambda) for which the homogeneous linear system has nontrivial solutions. (Enter your answers as a comma-separated list.) (a - 7)x + x + (À - 7)y = 0 y = 0

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Q: Q25: What's mean by a zero divisor element of a ring R? Find all zero divisor elements of Zg-

A: see below the answer

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