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Simplifying x2 + -1kx + 15 = 0 Reorder the terms: 15 + -1kx + x2 = 0 Solving 15 + -1kx + x2 = 0 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -1kx + -15 + x2 = 0 + -15 Reorder the terms: 15 + -15 + -1kx + x2 = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -1kx + x2 = 0 + -15 -1kx + x2 = 0 + -15 Combine like terms: 0 + -15 = -15 -1kx + x2 = -15 Add '-1x2' to each side of the equation. -1kx + x2 + -1x2 = -15 + -1x2 Combine like terms: x2 + -1x2 = 0 -1kx + 0 = -15 + -1x2 -1kx = -15 + -1x2 Divide each side by '-1x'. k = 15x-1 + x Simplifying k = 15x-1 + x
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