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Simplifying U4 + -81 = 0 Reorder the terms: -81 + U4 = 0 Solving -81 + U4 = 0 Solving for variable 'U'. Move all terms containing U to the left, all other terms to the right. Add '81' to each side of the equation. -81 + 81 + U4 = 0 + 81 Combine like terms: -81 + 81 = 0 0 + U4 = 0 + 81 U4 = 0 + 81 Combine like terms: 0 + 81 = 81 U4 = 81 Simplifying U4 = 81 Reorder the terms: -81 + U4 = 81 + -81 Combine like terms: 81 + -81 = 0 -81 + U4 = 0 Factor a difference between two squares. (9 + U2)(-9 + U2) = 0 Factor a difference between two squares. (9 + U2)((3 + U)(-3 + U)) = 0Subproblem 1
Set the factor '(9 + U2)' equal to zero and attempt to solve: Simplifying 9 + U2 = 0 Solving 9 + U2 = 0 Move all terms containing U to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + U2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + U2 = 0 + -9 U2 = 0 + -9 Combine like terms: 0 + -9 = -9 U2 = -9 Simplifying U2 = -9 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.Subproblem 2
Set the factor '(3 + U)' equal to zero and attempt to solve: Simplifying 3 + U = 0 Solving 3 + U = 0 Move all terms containing U to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + U = 0 + -3 Combine like terms: 3 + -3 = 0 0 + U = 0 + -3 U = 0 + -3 Combine like terms: 0 + -3 = -3 U = -3 Simplifying U = -3Subproblem 3
Set the factor '(-3 + U)' equal to zero and attempt to solve: Simplifying -3 + U = 0 Solving -3 + U = 0 Move all terms containing U to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + U = 0 + 3 Combine like terms: -3 + 3 = 0 0 + U = 0 + 3 U = 0 + 3 Combine like terms: 0 + 3 = 3 U = 3 Simplifying U = 3Solution
U = {-3, 3}
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