=x^4-4x^3+9

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


Simplifying
0 = x4 + -4x3 + 9

Reorder the terms:
0 = 9 + -4x3 + x4

Solving
0 = 9 + -4x3 + x4

Solving for variable 'x'.

Combine like terms: 0 + -9 = -9
-9 + 4x3 + -1x4 = 9 + -4x3 + x4 + -9 + 4x3 + -1x4

Reorder the terms:
-9 + 4x3 + -1x4 = 9 + -9 + -4x3 + 4x3 + x4 + -1x4

Combine like terms: 9 + -9 = 0
-9 + 4x3 + -1x4 = 0 + -4x3 + 4x3 + x4 + -1x4
-9 + 4x3 + -1x4 = -4x3 + 4x3 + x4 + -1x4

Combine like terms: -4x3 + 4x3 = 0
-9 + 4x3 + -1x4 = 0 + x4 + -1x4
-9 + 4x3 + -1x4 = x4 + -1x4

Combine like terms: x4 + -1x4 = 0
-9 + 4x3 + -1x4 = 0

The solution to this equation could not be determined.

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