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Simplifying 4x2 + 12x + -1k = 0 Reorder the terms: -1k + 12x + 4x2 = 0 Solving -1k + 12x + 4x2 = 0 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-12x' to each side of the equation. -1k + 12x + -12x + 4x2 = 0 + -12x Combine like terms: 12x + -12x = 0 -1k + 0 + 4x2 = 0 + -12x -1k + 4x2 = 0 + -12x Remove the zero: -1k + 4x2 = -12x Add '-4x2' to each side of the equation. -1k + 4x2 + -4x2 = -12x + -4x2 Combine like terms: 4x2 + -4x2 = 0 -1k + 0 = -12x + -4x2 -1k = -12x + -4x2 Divide each side by '-1'. k = 12x + 4x2 Simplifying k = 12x + 4x2
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