0=-x^4-8-x^2-9

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Solution for 0=-x^4-8-x^2-9 equation:


Simplifying
0 = -1x4 + -8 + -1x2 + -9

Reorder the terms:
0 = -8 + -9 + -1x2 + -1x4

Combine like terms: -8 + -9 = -17
0 = -17 + -1x2 + -1x4

Solving
0 = -17 + -1x2 + -1x4

Solving for variable 'x'.

Combine like terms: 0 + 17 = 17
17 + x2 + x4 = -17 + -1x2 + -1x4 + 17 + x2 + x4

Reorder the terms:
17 + x2 + x4 = -17 + 17 + -1x2 + x2 + -1x4 + x4

Combine like terms: -17 + 17 = 0
17 + x2 + x4 = 0 + -1x2 + x2 + -1x4 + x4
17 + x2 + x4 = -1x2 + x2 + -1x4 + x4

Combine like terms: -1x2 + x2 = 0
17 + x2 + x4 = 0 + -1x4 + x4
17 + x2 + x4 = -1x4 + x4

Combine like terms: -1x4 + x4 = 0
17 + x2 + x4 = 0

Begin completing the square.

Move the constant term to the right:

Add '-17' to each side of the equation.
17 + x2 + -17 + x4 = 0 + -17

Reorder the terms:
17 + -17 + x2 + x4 = 0 + -17

Combine like terms: 17 + -17 = 0
0 + x2 + x4 = 0 + -17
x2 + x4 = 0 + -17

Combine like terms: 0 + -17 = -17
x2 + x4 = -17

The x term is x2.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
x2 + 0.25 + x4 = -17 + 0.25

Reorder the terms:
0.25 + x2 + x4 = -17 + 0.25

Combine like terms: -17 + 0.25 = -16.75
0.25 + x2 + x4 = -16.75

Factor a perfect square on the left side:
(x2 + 0.5)(x2 + 0.5) = -16.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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