x^4+8x^2+10=0

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Solution for x^4+8x^2+10=0 equation:


Simplifying
x4 + 8x2 + 10 = 0

Reorder the terms:
10 + 8x2 + x4 = 0

Solving
10 + 8x2 + x4 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-10' to each side of the equation.
10 + 8x2 + -10 + x4 = 0 + -10

Reorder the terms:
10 + -10 + 8x2 + x4 = 0 + -10

Combine like terms: 10 + -10 = 0
0 + 8x2 + x4 = 0 + -10
8x2 + x4 = 0 + -10

Combine like terms: 0 + -10 = -10
8x2 + x4 = -10

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 = -10 + 16

Reorder the terms:
16 + 8x2 + x4 = -10 + 16

Combine like terms: -10 + 16 = 6
16 + 8x2 + x4 = 6

Factor a perfect square on the left side:
(x2 + 4)(x2 + 4) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(x2 + 4) equal to 2.449489743 and -2.449489743.

Subproblem 1

x2 + 4 = 2.449489743 Simplifying x2 + 4 = 2.449489743 Reorder the terms: 4 + x2 = 2.449489743 Solving 4 + x2 = 2.449489743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x2 = 2.449489743 + -4 Combine like terms: 4 + -4 = 0 0 + x2 = 2.449489743 + -4 x2 = 2.449489743 + -4 Combine like terms: 2.449489743 + -4 = -1.550510257 x2 = -1.550510257 Simplifying x2 = -1.550510257 Reorder the terms: 1.550510257 + x2 = -1.550510257 + 1.550510257 Combine like terms: -1.550510257 + 1.550510257 = 0.000000000 1.550510257 + x2 = 0.000000000 The solution to this equation could not be determined.This subproblem is being ignored because a solution could not be determined.

Subproblem 2

x2 + 4 = -2.449489743 Simplifying x2 + 4 = -2.449489743 Reorder the terms: 4 + x2 = -2.449489743 Solving 4 + x2 = -2.449489743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x2 = -2.449489743 + -4 Combine like terms: 4 + -4 = 0 0 + x2 = -2.449489743 + -4 x2 = -2.449489743 + -4 Combine like terms: -2.449489743 + -4 = -6.449489743 x2 = -6.449489743 Simplifying x2 = -6.449489743 Reorder the terms: 6.449489743 + x2 = -6.449489743 + 6.449489743 Combine like terms: -6.449489743 + 6.449489743 = 0.000000000 6.449489743 + x2 = 0.000000000 The solution to this equation could not be determined.This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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