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Simplifying 2x2 + 4x + c = 0 Reorder the terms: c + 4x + 2x2 = 0 Solving c + 4x + 2x2 = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-4x' to each side of the equation. c + 4x + -4x + 2x2 = 0 + -4x Combine like terms: 4x + -4x = 0 c + 0 + 2x2 = 0 + -4x c + 2x2 = 0 + -4x Remove the zero: c + 2x2 = -4x Add '-2x2' to each side of the equation. c + 2x2 + -2x2 = -4x + -2x2 Combine like terms: 2x2 + -2x2 = 0 c + 0 = -4x + -2x2 c = -4x + -2x2 Simplifying c = -4x + -2x2
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