x^4+9x^2+25=0

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Solution for x^4+9x^2+25=0 equation:


Simplifying
x4 + 9x2 + 25 = 0

Reorder the terms:
25 + 9x2 + x4 = 0

Solving
25 + 9x2 + x4 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-25' to each side of the equation.
25 + 9x2 + -25 + x4 = 0 + -25

Reorder the terms:
25 + -25 + 9x2 + x4 = 0 + -25

Combine like terms: 25 + -25 = 0
0 + 9x2 + x4 = 0 + -25
9x2 + x4 = 0 + -25

Combine like terms: 0 + -25 = -25
9x2 + x4 = -25

The x term is 9x2.  Take half its coefficient (4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
9x2 + 20.25 + x4 = -25 + 20.25

Reorder the terms:
20.25 + 9x2 + x4 = -25 + 20.25

Combine like terms: -25 + 20.25 = -4.75
20.25 + 9x2 + x4 = -4.75

Factor a perfect square on the left side:
(x2 + 4.5)(x2 + 4.5) = -4.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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