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Simplifying 2x2 + 21 = 0 Reorder the terms: 21 + 2x2 = 0 Solving 21 + 2x2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + 2x2 = 0 + -21 Combine like terms: 21 + -21 = 0 0 + 2x2 = 0 + -21 2x2 = 0 + -21 Combine like terms: 0 + -21 = -21 2x2 = -21 Divide each side by '2'. x2 = -10.5 Simplifying x2 = -10.5 Reorder the terms: 10.5 + x2 = -10.5 + 10.5 Combine like terms: -10.5 + 10.5 = 0.0 10.5 + x2 = 0.0 The solution to this equation could not be determined.
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