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Simplifying 0 = 3x3 + 21x2 + 3x + 21 Reorder the terms: 0 = 21 + 3x + 21x2 + 3x3 Solving 0 = 21 + 3x + 21x2 + 3x3 Solving for variable 'x'. Combine like terms: 0 + -21 = -21 -21 + -3x + -21x2 + -3x3 = 21 + 3x + 21x2 + 3x3 + -21 + -3x + -21x2 + -3x3 Reorder the terms: -21 + -3x + -21x2 + -3x3 = 21 + -21 + 3x + -3x + 21x2 + -21x2 + 3x3 + -3x3 Combine like terms: 21 + -21 = 0 -21 + -3x + -21x2 + -3x3 = 0 + 3x + -3x + 21x2 + -21x2 + 3x3 + -3x3 -21 + -3x + -21x2 + -3x3 = 3x + -3x + 21x2 + -21x2 + 3x3 + -3x3 Combine like terms: 3x + -3x = 0 -21 + -3x + -21x2 + -3x3 = 0 + 21x2 + -21x2 + 3x3 + -3x3 -21 + -3x + -21x2 + -3x3 = 21x2 + -21x2 + 3x3 + -3x3 Combine like terms: 21x2 + -21x2 = 0 -21 + -3x + -21x2 + -3x3 = 0 + 3x3 + -3x3 -21 + -3x + -21x2 + -3x3 = 3x3 + -3x3 Combine like terms: 3x3 + -3x3 = 0 -21 + -3x + -21x2 + -3x3 = 0 Factor out the Greatest Common Factor (GCF), '-3'. -3(7 + x + 7x2 + x3) = 0 Ignore the factor -3.Subproblem 1
Set the factor '(7 + x + 7x2 + x3)' equal to zero and attempt to solve: Simplifying 7 + x + 7x2 + x3 = 0 Solving 7 + x + 7x2 + x3 = 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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