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Simplifying -20r3 + 28r + 4 = 0 Reorder the terms: 4 + 28r + -20r3 = 0 Solving 4 + 28r + -20r3 = 0 Solving for variable 'r'. Factor out the Greatest Common Factor (GCF), '4'. 4(1 + 7r + -5r3) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(1 + 7r + -5r3)' equal to zero and attempt to solve: Simplifying 1 + 7r + -5r3 = 0 Solving 1 + 7r + -5r3 = 0 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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