8x^4-14x^2+7=0

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Solution for 8x^4-14x^2+7=0 equation:


Simplifying
8x4 + -14x2 + 7 = 0

Reorder the terms:
7 + -14x2 + 8x4 = 0

Solving
7 + -14x2 + 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 + -1.75x2 + x4 = 0

Move the constant term to the right:

Add '-0.875' to each side of the equation.
0.875 + -1.75x2 + -0.875 + x4 = 0 + -0.875

Reorder the terms:
0.875 + -0.875 + -1.75x2 + x4 = 0 + -0.875

Combine like terms: 0.875 + -0.875 = 0.000
0.000 + -1.75x2 + x4 = 0 + -0.875
-1.75x2 + x4 = 0 + -0.875

Combine like terms: 0 + -0.875 = -0.875
-1.75x2 + x4 = -0.875

The x term is -1.75x2.  Take half its coefficient (-0.875).
Square it (0.765625) and add it to both sides.

Add '0.765625' to each side of the equation.
-1.75x2 + 0.765625 + x4 = -0.875 + 0.765625

Reorder the terms:
0.765625 + -1.75x2 + x4 = -0.875 + 0.765625

Combine like terms: -0.875 + 0.765625 = -0.109375
0.765625 + -1.75x2 + x4 = -0.109375

Factor a perfect square on the left side:
(x2 + -0.875)(x2 + -0.875) = -0.109375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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