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OpenStudy (anonymous):
Use a graphing calculator or spreadsheet software to solve x + 2y + z = 5 2x – y + z = 4 3x + y + 4z = 1 using matrices. A. (5, 2, -4) B. (1, 1, 2) C. (2, 5, -4) D. (5, 4, 1)
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