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Simplifying 21x4 + -15x3 + 168x + -120 = 0 Reorder the terms: -120 + 168x + -15x3 + 21x4 = 0 Solving -120 + 168x + -15x3 + 21x4 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '3'. 3(-40 + 56x + -5x3 + 7x4) = 0 Ignore the factor 3.Subproblem 1
Set the factor '(-40 + 56x + -5x3 + 7x4)' equal to zero and attempt to solve: Simplifying -40 + 56x + -5x3 + 7x4 = 0 Solving -40 + 56x + -5x3 + 7x4 = 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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