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Simplifying 7x2 + -2x + -1k = 0 Reorder the terms: -1k + -2x + 7x2 = 0 Solving -1k + -2x + 7x2 = 0 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '2x' to each side of the equation. -1k + -2x + 2x + 7x2 = 0 + 2x Combine like terms: -2x + 2x = 0 -1k + 0 + 7x2 = 0 + 2x -1k + 7x2 = 0 + 2x Remove the zero: -1k + 7x2 = 2x Add '-7x2' to each side of the equation. -1k + 7x2 + -7x2 = 2x + -7x2 Combine like terms: 7x2 + -7x2 = 0 -1k + 0 = 2x + -7x2 -1k = 2x + -7x2 Divide each side by '-1'. k = -2x + 7x2 Simplifying k = -2x + 7x2
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