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