5x^4+3x^2+7=0

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Solution for 5x^4+3x^2+7=0 equation:


Simplifying
5x4 + 3x2 + 7 = 0

Reorder the terms:
7 + 3x2 + 5x4 = 0

Solving
7 + 3x2 + 5x4 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
1.4 + 0.6x2 + x4 = 0

Move the constant term to the right:

Add '-1.4' to each side of the equation.
1.4 + 0.6x2 + -1.4 + x4 = 0 + -1.4

Reorder the terms:
1.4 + -1.4 + 0.6x2 + x4 = 0 + -1.4

Combine like terms: 1.4 + -1.4 = 0.0
0.0 + 0.6x2 + x4 = 0 + -1.4
0.6x2 + x4 = 0 + -1.4

Combine like terms: 0 + -1.4 = -1.4
0.6x2 + x4 = -1.4

The x term is 0.6x2.  Take half its coefficient (0.3).
Square it (0.09) and add it to both sides.

Add '0.09' to each side of the equation.
0.6x2 + 0.09 + x4 = -1.4 + 0.09

Reorder the terms:
0.09 + 0.6x2 + x4 = -1.4 + 0.09

Combine like terms: -1.4 + 0.09 = -1.31
0.09 + 0.6x2 + x4 = -1.31

Factor a perfect square on the left side:
(x2 + 0.3)(x2 + 0.3) = -1.31

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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