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Simplifying x3 + 10x + k = 0 Reorder the terms: k + 10x + x3 = 0 Solving k + 10x + x3 = 0 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-10x' to each side of the equation. k + 10x + -10x + x3 = 0 + -10x Combine like terms: 10x + -10x = 0 k + 0 + x3 = 0 + -10x k + x3 = 0 + -10x Remove the zero: k + x3 = -10x Add '-1x3' to each side of the equation. k + x3 + -1x3 = -10x + -1x3 Combine like terms: x3 + -1x3 = 0 k + 0 = -10x + -1x3 k = -10x + -1x3 Simplifying k = -10x + -1x3
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