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Simplifying x3 + -1kx2 + kx + 21 = 0 Reorder the terms: 21 + kx + -1kx2 + x3 = 0 Solving 21 + kx + -1kx2 + x3 = 0 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + kx + -1kx2 + -21 + x3 = 0 + -21 Reorder the terms: 21 + -21 + kx + -1kx2 + x3 = 0 + -21 Combine like terms: 21 + -21 = 0 0 + kx + -1kx2 + x3 = 0 + -21 kx + -1kx2 + x3 = 0 + -21 Combine like terms: 0 + -21 = -21 kx + -1kx2 + x3 = -21 Add '-1x3' to each side of the equation. kx + -1kx2 + x3 + -1x3 = -21 + -1x3 Combine like terms: x3 + -1x3 = 0 kx + -1kx2 + 0 = -21 + -1x3 kx + -1kx2 = -21 + -1x3 Reorder the terms: 21 + kx + -1kx2 + x3 = -21 + -1x3 + 21 + x3 Reorder the terms: 21 + kx + -1kx2 + x3 = -21 + 21 + -1x3 + x3 Combine like terms: -21 + 21 = 0 21 + kx + -1kx2 + x3 = 0 + -1x3 + x3 21 + kx + -1kx2 + x3 = -1x3 + x3 Combine like terms: -1x3 + x3 = 0 21 + kx + -1kx2 + x3 = 0 The solution to this equation could not be determined.
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