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Simplifying -1 = -1 * -1 + -2 Multiply -1 * -1 -1 = 1 + -2 Combine like terms: 1 + -2 = -1 -1 = -1 Add '1' to each side of the equation. -1 + 1 = -1 + 1 Combine like terms: -1 + 1 = 0 0 = -1 + 1 Combine like terms: -1 + 1 = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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