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Simplifying 4x2 + 28 = -81 Reorder the terms: 28 + 4x2 = -81 Solving 28 + 4x2 = -81 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-28' to each side of the equation. 28 + -28 + 4x2 = -81 + -28 Combine like terms: 28 + -28 = 0 0 + 4x2 = -81 + -28 4x2 = -81 + -28 Combine like terms: -81 + -28 = -109 4x2 = -109 Divide each side by '4'. x2 = -27.25 Simplifying x2 = -27.25 Reorder the terms: 27.25 + x2 = -27.25 + 27.25 Combine like terms: -27.25 + 27.25 = 0.00 27.25 + x2 = 0.00 The solution to this equation could not be determined.
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