2x^4-3x^2+15=0

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Solution for 2x^4-3x^2+15=0 equation:


Simplifying
2x4 + -3x2 + 15 = 0

Reorder the terms:
15 + -3x2 + 2x4 = 0

Solving
15 + -3x2 + 2x4 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
7.5 + -1.5x2 + x4 = 0

Move the constant term to the right:

Add '-7.5' to each side of the equation.
7.5 + -1.5x2 + -7.5 + x4 = 0 + -7.5

Reorder the terms:
7.5 + -7.5 + -1.5x2 + x4 = 0 + -7.5

Combine like terms: 7.5 + -7.5 = 0.0
0.0 + -1.5x2 + x4 = 0 + -7.5
-1.5x2 + x4 = 0 + -7.5

Combine like terms: 0 + -7.5 = -7.5
-1.5x2 + x4 = -7.5

The x term is -1.5x2.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5x2 + 0.5625 + x4 = -7.5 + 0.5625

Reorder the terms:
0.5625 + -1.5x2 + x4 = -7.5 + 0.5625

Combine like terms: -7.5 + 0.5625 = -6.9375
0.5625 + -1.5x2 + x4 = -6.9375

Factor a perfect square on the left side:
(x2 + -0.75)(x2 + -0.75) = -6.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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