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Simplifying x2 + -1kx + 169 = 0 Reorder the terms: 169 + -1kx + x2 = 0 Solving 169 + -1kx + x2 = 0 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-169' to each side of the equation. 169 + -1kx + -169 + x2 = 0 + -169 Reorder the terms: 169 + -169 + -1kx + x2 = 0 + -169 Combine like terms: 169 + -169 = 0 0 + -1kx + x2 = 0 + -169 -1kx + x2 = 0 + -169 Combine like terms: 0 + -169 = -169 -1kx + x2 = -169 Add '-1x2' to each side of the equation. -1kx + x2 + -1x2 = -169 + -1x2 Combine like terms: x2 + -1x2 = 0 -1kx + 0 = -169 + -1x2 -1kx = -169 + -1x2 Divide each side by '-1x'. k = 169x-1 + x Simplifying k = 169x-1 + x
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