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Simplifying z2 + -13z + 12 = a Reorder the terms: 12 + -13z + z2 = a Solving 12 + -13z + z2 = a Solving for variable 'z'. Reorder the terms: 12 + -1a + -13z + z2 = a + -1a Combine like terms: a + -1a = 0 12 + -1a + -13z + z2 = 0 The solution to this equation could not be determined.
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