-8x^4+x^2-7=0

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Solution for -8x^4+x^2-7=0 equation:


Simplifying
-8x4 + x2 + -7 = 0

Reorder the terms:
-7 + x2 + -8x4 = 0

Solving
-7 + x2 + -8x4 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-8 the coefficient of the squared term: 

Divide each side by '-8'.
0.875 + -0.125x2 + x4 = 0

Move the constant term to the right:

Add '-0.875' to each side of the equation.
0.875 + -0.125x2 + -0.875 + x4 = 0 + -0.875

Reorder the terms:
0.875 + -0.875 + -0.125x2 + x4 = 0 + -0.875

Combine like terms: 0.875 + -0.875 = 0.000
0.000 + -0.125x2 + x4 = 0 + -0.875
-0.125x2 + x4 = 0 + -0.875

Combine like terms: 0 + -0.875 = -0.875
-0.125x2 + x4 = -0.875

The x term is x2.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-0.125x2 + 0.25 + x4 = -0.875 + 0.25

Reorder the terms:
0.25 + -0.125x2 + x4 = -0.875 + 0.25

Combine like terms: -0.875 + 0.25 = -0.625
0.25 + -0.125x2 + x4 = -0.625

Factor a perfect square on the left side:
(x2 + 0.5)(x2 + 0.5) = -0.625

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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