-x^3+9x^2-16x+21=4x+9

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Solution for -x^3+9x^2-16x+21=4x+9 equation: 


Simplifying
-1x3 + 9x2 + -16x + 21 = 4x + 9

Reorder the terms:
21 + -16x + 9x2 + -1x3 = 4x + 9

Reorder the terms:
21 + -16x + 9x2 + -1x3 = 9 + 4x

Solving
21 + -16x + 9x2 + -1x3 = 9 + 4x

Solving for variable 'x'.

Reorder the terms:
21 + -9 + -16x + -4x + 9x2 + -1x3 = 9 + 4x + -9 + -4x

Combine like terms: 21 + -9 = 12
12 + -16x + -4x + 9x2 + -1x3 = 9 + 4x + -9 + -4x

Combine like terms: -16x + -4x = -20x
12 + -20x + 9x2 + -1x3 = 9 + 4x + -9 + -4x

Reorder the terms:
12 + -20x + 9x2 + -1x3 = 9 + -9 + 4x + -4x

Combine like terms: 9 + -9 = 0
12 + -20x + 9x2 + -1x3 = 0 + 4x + -4x
12 + -20x + 9x2 + -1x3 = 4x + -4x

Combine like terms: 4x + -4x = 0
12 + -20x + 9x2 + -1x3 = 0

The solution to this equation could not be determined.

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