Solve the following system of equations using the Gauss Elimination or Gauss Elimination with Row Pivoting Method. 2. 3. 4x₁ + x₂ + 2x3 21 2x1 2x₂ + 2x3 8 X1 - 2x₂ + 4x3 16 - 2x₁ + x₂ - 2x₁ + x₂ x3 + 4x4 -x₁2x₂ + x3 + 2x4 2x₁ + 4x₂ + 2x3 + x4 = 25 -X₁ + X₂ X3 - 2x4 = -5 - = - X1 2x₂ + x3 3x1 x2 - 2x3 -x₁ + 2x₂ + x3 x3 + 2x4 = 19 -3 0 4x4 3 = X4 = -3 2x4 = 13

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