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Simplifying U(r) = -4r2 + -5 + -4r Multiply U * r rU = -4r2 + -5 + -4r Reorder the terms: rU = -5 + -4r + -4r2 Solving rU = -5 + -4r + -4r2 Solving for variable 'r'. Reorder the terms: 5 + 4r + rU + 4r2 = -5 + -4r + -4r2 + 5 + 4r + 4r2 Reorder the terms: 5 + 4r + rU + 4r2 = -5 + 5 + -4r + 4r + -4r2 + 4r2 Combine like terms: -5 + 5 = 0 5 + 4r + rU + 4r2 = 0 + -4r + 4r + -4r2 + 4r2 5 + 4r + rU + 4r2 = -4r + 4r + -4r2 + 4r2 Combine like terms: -4r + 4r = 0 5 + 4r + rU + 4r2 = 0 + -4r2 + 4r2 5 + 4r + rU + 4r2 = -4r2 + 4r2 Combine like terms: -4r2 + 4r2 = 0 5 + 4r + rU + 4r2 = 0 The solution to this equation could not be determined.
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