0=7x^4-2x^2+1

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Solution for 0=7x^4-2x^2+1 equation:


Simplifying
0 = 7x4 + -2x2 + 1

Reorder the terms:
0 = 1 + -2x2 + 7x4

Solving
0 = 1 + -2x2 + 7x4

Solving for variable 'x'.

Combine like terms: 0 + -1 = -1
-1 + 2x2 + -7x4 = 1 + -2x2 + 7x4 + -1 + 2x2 + -7x4

Reorder the terms:
-1 + 2x2 + -7x4 = 1 + -1 + -2x2 + 2x2 + 7x4 + -7x4

Combine like terms: 1 + -1 = 0
-1 + 2x2 + -7x4 = 0 + -2x2 + 2x2 + 7x4 + -7x4
-1 + 2x2 + -7x4 = -2x2 + 2x2 + 7x4 + -7x4

Combine like terms: -2x2 + 2x2 = 0
-1 + 2x2 + -7x4 = 0 + 7x4 + -7x4
-1 + 2x2 + -7x4 = 7x4 + -7x4

Combine like terms: 7x4 + -7x4 = 0
-1 + 2x2 + -7x4 = 0

Begin completing the square.  Divide all terms by
-7 the coefficient of the squared term: 

Divide each side by '-7'.
0.1428571429 + -0.2857142857x2 + x4 = 0

Move the constant term to the right:

Add '-0.1428571429' to each side of the equation.
0.1428571429 + -0.2857142857x2 + -0.1428571429 + x4 = 0 + -0.1428571429

Reorder the terms:
0.1428571429 + -0.1428571429 + -0.2857142857x2 + x4 = 0 + -0.1428571429

Combine like terms: 0.1428571429 + -0.1428571429 = 0.0000000000
0.0000000000 + -0.2857142857x2 + x4 = 0 + -0.1428571429
-0.2857142857x2 + x4 = 0 + -0.1428571429

Combine like terms: 0 + -0.1428571429 = -0.1428571429
-0.2857142857x2 + x4 = -0.1428571429

The x term is -0.2857142857x2.  Take half its coefficient (-0.1428571429).
Square it (0.02040816328) and add it to both sides.

Add '0.02040816328' to each side of the equation.
-0.2857142857x2 + 0.02040816328 + x4 = -0.1428571429 + 0.02040816328

Reorder the terms:
0.02040816328 + -0.2857142857x2 + x4 = -0.1428571429 + 0.02040816328

Combine like terms: -0.1428571429 + 0.02040816328 = -0.12244897962
0.02040816328 + -0.2857142857x2 + x4 = -0.12244897962

Factor a perfect square on the left side:
(x2 + -0.1428571429)(x2 + -0.1428571429) = -0.12244897962

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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