9x^4-4x^2+4=0

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Solution for 9x^4-4x^2+4=0 equation:


Simplifying
9x4 + -4x2 + 4 = 0

Reorder the terms:
4 + -4x2 + 9x4 = 0

Solving
4 + -4x2 + 9x4 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
9 the coefficient of the squared term: 

Divide each side by '9'.
0.4444444444 + -0.4444444444x2 + x4 = 0

Move the constant term to the right:

Add '-0.4444444444' to each side of the equation.
0.4444444444 + -0.4444444444x2 + -0.4444444444 + x4 = 0 + -0.4444444444

Reorder the terms:
0.4444444444 + -0.4444444444 + -0.4444444444x2 + x4 = 0 + -0.4444444444

Combine like terms: 0.4444444444 + -0.4444444444 = 0.0000000000
0.0000000000 + -0.4444444444x2 + x4 = 0 + -0.4444444444
-0.4444444444x2 + x4 = 0 + -0.4444444444

Combine like terms: 0 + -0.4444444444 = -0.4444444444
-0.4444444444x2 + x4 = -0.4444444444

The x term is -0.4444444444x2.  Take half its coefficient (-0.2222222222).
Square it (0.04938271604) and add it to both sides.

Add '0.04938271604' to each side of the equation.
-0.4444444444x2 + 0.04938271604 + x4 = -0.4444444444 + 0.04938271604

Reorder the terms:
0.04938271604 + -0.4444444444x2 + x4 = -0.4444444444 + 0.04938271604

Combine like terms: -0.4444444444 + 0.04938271604 = -0.39506172836
0.04938271604 + -0.4444444444x2 + x4 = -0.39506172836

Factor a perfect square on the left side:
(x2 + -0.2222222222)(x2 + -0.2222222222) = -0.39506172836

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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