Mathematics, 18.10.2021 08:20, srgrace9948

Giải hệ ( toán cao cấp ) x + 3y - z + 2t = 0

2x + 7y - z + 2t = -3

-3x - 7y + 6z - 12t = -4

-x - 2y + 5z - 11t = -1

Answers: 2

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Giải hệ ( toán cao cấp ) x + 3y - z + 2t = 0

2x + 7y - z + 2t = -3

-3x - 7y...