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Simplifying r4 + 4r2 + 4 = 0 Reorder the terms: 4 + 4r2 + r4 = 0 Solving 4 + 4r2 + r4 = 0 Solving for variable 'r'. Factor a trinomial. (2 + r2)(2 + r2) = 0Subproblem 1
Set the factor '(2 + r2)' equal to zero and attempt to solve: Simplifying 2 + r2 = 0 Solving 2 + r2 = 0 Move all terms containing r to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + r2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + r2 = 0 + -2 r2 = 0 + -2 Combine like terms: 0 + -2 = -2 r2 = -2 Simplifying r2 = -2 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 '(2 + r2)' equal to zero and attempt to solve: Simplifying 2 + r2 = 0 Solving 2 + r2 = 0 Move all terms containing r to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + r2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + r2 = 0 + -2 r2 = 0 + -2 Combine like terms: 0 + -2 = -2 r2 = -2 Simplifying r2 = -2 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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