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Simplifying 4x2 + 12x + -12x + -4x2 = 0 Reorder the terms: 12x + -12x + 4x2 + -4x2 = 0 Combine like terms: 12x + -12x = 0 0 + 4x2 + -4x2 = 0 4x2 + -4x2 = 0 Combine like terms: 4x2 + -4x2 = 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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