=3x^3+21x^2+3x+21

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Solution for =3x^3+21x^2+3x+21 equation:


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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