-2.25x^4+3x^2-1=0

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Solution for -2.25x^4+3x^2-1=0 equation:


Simplifying
-2.25x4 + 3x2 + -1 = 0

Reorder the terms:
-1 + 3x2 + -2.25x4 = 0

Solving
-1 + 3x2 + -2.25x4 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-2.25 the coefficient of the squared term: 

Divide each side by '-2.25'.
0.4444444444 + -1.333333333x2 + x4 = 0

Move the constant term to the right:

Add '-0.4444444444' to each side of the equation.
0.4444444444 + -1.333333333x2 + -0.4444444444 + x4 = 0 + -0.4444444444

Reorder the terms:
0.4444444444 + -0.4444444444 + -1.333333333x2 + x4 = 0 + -0.4444444444

Combine like terms: 0.4444444444 + -0.4444444444 = 0.0000000000
0.0000000000 + -1.333333333x2 + x4 = 0 + -0.4444444444
-1.333333333x2 + x4 = 0 + -0.4444444444

Combine like terms: 0 + -0.4444444444 = -0.4444444444
-1.333333333x2 + x4 = -0.4444444444

The x term is -1.333333333x2.  Take half its coefficient (-0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
-1.333333333x2 + 0.4444444442 + x4 = -0.4444444444 + 0.4444444442

Reorder the terms:
0.4444444442 + -1.333333333x2 + x4 = -0.4444444444 + 0.4444444442

Combine like terms: -0.4444444444 + 0.4444444442 = -0.0000000002
0.4444444442 + -1.333333333x2 + x4 = -0.0000000002

Factor a perfect square on the left side:
(x2 + -0.6666666665)(x2 + -0.6666666665) = -0.0000000002

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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