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Simplifying X2 + 2x + 1 = 21 Reorder the terms: 1 + X2 + 2x = 21 Solving 1 + X2 + 2x = 21 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + X2 + -1 + 2x = 21 + -1 Reorder the terms: 1 + -1 + X2 + 2x = 21 + -1 Combine like terms: 1 + -1 = 0 0 + X2 + 2x = 21 + -1 X2 + 2x = 21 + -1 Combine like terms: 21 + -1 = 20 X2 + 2x = 20 Add '-2x' to each side of the equation. X2 + 2x + -2x = 20 + -2x Combine like terms: 2x + -2x = 0 X2 + 0 = 20 + -2x X2 = 20 + -2x Simplifying X2 = 20 + -2x Reorder the terms: -20 + X2 + 2x = 20 + -2x + -20 + 2x Reorder the terms: -20 + X2 + 2x = 20 + -20 + -2x + 2x Combine like terms: 20 + -20 = 0 -20 + X2 + 2x = 0 + -2x + 2x -20 + X2 + 2x = -2x + 2x Combine like terms: -2x + 2x = 0 -20 + X2 + 2x = 0 The solution to this equation could not be determined.
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