Question: Answer Exercise 1.8.25 for the system 2x1 + x2 + x3 - x4 = 0, 2x1 - 2x2 -x3 + 3x4 = 0.

Answer Exercise 1.8.25 for the system 2x1 + x2 + x3 - x4 = 0, 2x1 - 2x2 -x3 + 3x4 = 0.

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