X^4-9x^2=x^3-9x

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Solution for X^4-9x^2=x^3-9x equation: 


Simplifying
X4 + -9x2 = x3 + -9x

Reorder the terms:
X4 + -9x2 = -9x + x3

Solving
X4 + -9x2 = -9x + x3

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '9x2' to each side of the equation.
X4 + -9x2 + 9x2 = -9x + 9x2 + x3

Combine like terms: -9x2 + 9x2 = 0
X4 + 0 = -9x + 9x2 + x3
X4 = -9x + 9x2 + x3

Simplifying
X4 = -9x + 9x2 + x3

Reorder the terms:
X4 + 9x + -9x2 + -1x3 = -9x + 9x + 9x2 + -9x2 + x3 + -1x3

Combine like terms: -9x + 9x = 0
X4 + 9x + -9x2 + -1x3 = 0 + 9x2 + -9x2 + x3 + -1x3
X4 + 9x + -9x2 + -1x3 = 9x2 + -9x2 + x3 + -1x3

Combine like terms: 9x2 + -9x2 = 0
X4 + 9x + -9x2 + -1x3 = 0 + x3 + -1x3
X4 + 9x + -9x2 + -1x3 = x3 + -1x3

Combine like terms: x3 + -1x3 = 0
X4 + 9x + -9x2 + -1x3 = 0

The solution to this equation could not be determined.

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