4x^4-30x^2+125=0

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Solution for 4x^4-30x^2+125=0 equation:


Simplifying
4x4 + -30x2 + 125 = 0

Reorder the terms:
125 + -30x2 + 4x4 = 0

Solving
125 + -30x2 + 4x4 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
31.25 + -7.5x2 + x4 = 0

Move the constant term to the right:

Add '-31.25' to each side of the equation.
31.25 + -7.5x2 + -31.25 + x4 = 0 + -31.25

Reorder the terms:
31.25 + -31.25 + -7.5x2 + x4 = 0 + -31.25

Combine like terms: 31.25 + -31.25 = 0.00
0.00 + -7.5x2 + x4 = 0 + -31.25
-7.5x2 + x4 = 0 + -31.25

Combine like terms: 0 + -31.25 = -31.25
-7.5x2 + x4 = -31.25

The x term is -7.5x2.  Take half its coefficient (-3.75).
Square it (14.0625) and add it to both sides.

Add '14.0625' to each side of the equation.
-7.5x2 + 14.0625 + x4 = -31.25 + 14.0625

Reorder the terms:
14.0625 + -7.5x2 + x4 = -31.25 + 14.0625

Combine like terms: -31.25 + 14.0625 = -17.1875
14.0625 + -7.5x2 + x4 = -17.1875

Factor a perfect square on the left side:
(x2 + -3.75)(x2 + -3.75) = -17.1875

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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