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Simplifying x2 + -4 + 8x + c = 0 Reorder the terms: -4 + c + 8x + x2 = 0 Solving -4 + c + 8x + x2 = 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 + c + 8x + 4 + x2 = 0 + 4 Reorder the terms: -4 + 4 + c + 8x + x2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + c + 8x + x2 = 0 + 4 c + 8x + x2 = 0 + 4 Combine like terms: 0 + 4 = 4 c + 8x + x2 = 4 Add '-8x' to each side of the equation. c + 8x + -8x + x2 = 4 + -8x Combine like terms: 8x + -8x = 0 c + 0 + x2 = 4 + -8x c + x2 = 4 + -8x Add '-1x2' to each side of the equation. c + x2 + -1x2 = 4 + -8x + -1x2 Combine like terms: x2 + -1x2 = 0 c + 0 = 4 + -8x + -1x2 c = 4 + -8x + -1x2 Simplifying c = 4 + -8x + -1x2
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