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Simplifying 0 = x4 + -4x3 + -13x2 + 28x + 12 Reorder the terms: 0 = 12 + 28x + -13x2 + -4x3 + x4 Solving 0 = 12 + 28x + -13x2 + -4x3 + x4 Solving for variable 'x'. Combine like terms: 0 + -12 = -12 -12 + -28x + 13x2 + 4x3 + -1x4 = 12 + 28x + -13x2 + -4x3 + x4 + -12 + -28x + 13x2 + 4x3 + -1x4 Reorder the terms: -12 + -28x + 13x2 + 4x3 + -1x4 = 12 + -12 + 28x + -28x + -13x2 + 13x2 + -4x3 + 4x3 + x4 + -1x4 Combine like terms: 12 + -12 = 0 -12 + -28x + 13x2 + 4x3 + -1x4 = 0 + 28x + -28x + -13x2 + 13x2 + -4x3 + 4x3 + x4 + -1x4 -12 + -28x + 13x2 + 4x3 + -1x4 = 28x + -28x + -13x2 + 13x2 + -4x3 + 4x3 + x4 + -1x4 Combine like terms: 28x + -28x = 0 -12 + -28x + 13x2 + 4x3 + -1x4 = 0 + -13x2 + 13x2 + -4x3 + 4x3 + x4 + -1x4 -12 + -28x + 13x2 + 4x3 + -1x4 = -13x2 + 13x2 + -4x3 + 4x3 + x4 + -1x4 Combine like terms: -13x2 + 13x2 = 0 -12 + -28x + 13x2 + 4x3 + -1x4 = 0 + -4x3 + 4x3 + x4 + -1x4 -12 + -28x + 13x2 + 4x3 + -1x4 = -4x3 + 4x3 + x4 + -1x4 Combine like terms: -4x3 + 4x3 = 0 -12 + -28x + 13x2 + 4x3 + -1x4 = 0 + x4 + -1x4 -12 + -28x + 13x2 + 4x3 + -1x4 = x4 + -1x4 Combine like terms: x4 + -1x4 = 0 -12 + -28x + 13x2 + 4x3 + -1x4 = 0 The solution to this equation could not be determined.
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