x^4+8x^2+36=0

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Solution for x^4+8x^2+36=0 equation:


Simplifying
x4 + 8x2 + 36 = 0

Reorder the terms:
36 + 8x2 + x4 = 0

Solving
36 + 8x2 + x4 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-36' to each side of the equation.
36 + 8x2 + -36 + x4 = 0 + -36

Reorder the terms:
36 + -36 + 8x2 + x4 = 0 + -36

Combine like terms: 36 + -36 = 0
0 + 8x2 + x4 = 0 + -36
8x2 + x4 = 0 + -36

Combine like terms: 0 + -36 = -36
8x2 + x4 = -36

The x term is 8x2.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x2 + 16 + x4 = -36 + 16

Reorder the terms:
16 + 8x2 + x4 = -36 + 16

Combine like terms: -36 + 16 = -20
16 + 8x2 + x4 = -20

Factor a perfect square on the left side:
(x2 + 4)(x2 + 4) = -20

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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