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Simplifying x2 + -1kx + 9 = y Reorder the terms: 9 + -1kx + x2 = y Solving 9 + -1kx + x2 = y Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -1kx + -9 + x2 = -9 + y Reorder the terms: 9 + -9 + -1kx + x2 = -9 + y Combine like terms: 9 + -9 = 0 0 + -1kx + x2 = -9 + y -1kx + x2 = -9 + y Add '-1x2' to each side of the equation. -1kx + x2 + -1x2 = -9 + -1x2 + y Combine like terms: x2 + -1x2 = 0 -1kx + 0 = -9 + -1x2 + y -1kx = -9 + -1x2 + y Divide each side by '-1x'. k = 9x-1 + x + -1x-1y Simplifying k = 9x-1 + x + -1x-1y Reorder the terms: k = 9x-1 + -1x-1y + x
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