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Simplifying 4d2 + 81 = 9 Reorder the terms: 81 + 4d2 = 9 Solving 81 + 4d2 = 9 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '-81' to each side of the equation. 81 + -81 + 4d2 = 9 + -81 Combine like terms: 81 + -81 = 0 0 + 4d2 = 9 + -81 4d2 = 9 + -81 Combine like terms: 9 + -81 = -72 4d2 = -72 Divide each side by '4'. d2 = -18 Simplifying d2 = -18 Reorder the terms: 18 + d2 = -18 + 18 Combine like terms: -18 + 18 = 0 18 + d2 = 0 The solution to this equation could not be determined.
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