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Simplifying -1x2 + 8x + k = 0 Reorder the terms: k + 8x + -1x2 = 0 Solving k + 8x + -1x2 = 0 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-8x' to each side of the equation. k + 8x + -8x + -1x2 = 0 + -8x Combine like terms: 8x + -8x = 0 k + 0 + -1x2 = 0 + -8x k + -1x2 = 0 + -8x Remove the zero: k + -1x2 = -8x Add 'x2' to each side of the equation. k + -1x2 + x2 = -8x + x2 Combine like terms: -1x2 + x2 = 0 k + 0 = -8x + x2 k = -8x + x2 Simplifying k = -8x + x2
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