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Simplifying 2x2 + 9c + 4 = 0 Reorder the terms: 4 + 9c + 2x2 = 0 Solving 4 + 9c + 2x2 = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + 9c + -4 + 2x2 = 0 + -4 Reorder the terms: 4 + -4 + 9c + 2x2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 9c + 2x2 = 0 + -4 9c + 2x2 = 0 + -4 Combine like terms: 0 + -4 = -4 9c + 2x2 = -4 Add '-2x2' to each side of the equation. 9c + 2x2 + -2x2 = -4 + -2x2 Combine like terms: 2x2 + -2x2 = 0 9c + 0 = -4 + -2x2 9c = -4 + -2x2 Divide each side by '9'. c = -0.4444444444 + -0.2222222222x2 Simplifying c = -0.4444444444 + -0.2222222222x2
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