m^4+8m^2+8=0

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Solution for m^4+8m^2+8=0 equation:


Simplifying
m4 + 8m2 + 8 = 0

Reorder the terms:
8 + 8m2 + m4 = 0

Solving
8 + 8m2 + m4 = 0

Solving for variable 'm'.

Begin completing the square.

Move the constant term to the right:

Add '-8' to each side of the equation.
8 + 8m2 + -8 + m4 = 0 + -8

Reorder the terms:
8 + -8 + 8m2 + m4 = 0 + -8

Combine like terms: 8 + -8 = 0
0 + 8m2 + m4 = 0 + -8
8m2 + m4 = 0 + -8

Combine like terms: 0 + -8 = -8
8m2 + m4 = -8

The m term is 8m2.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8m2 + 16 + m4 = -8 + 16

Reorder the terms:
16 + 8m2 + m4 = -8 + 16

Combine like terms: -8 + 16 = 8
16 + 8m2 + m4 = 8

Factor a perfect square on the left side:
(m2 + 4)(m2 + 4) = 8

Calculate the square root of the right side: 2.828427125

Break this problem into two subproblems by setting 
(m2 + 4) equal to 2.828427125 and -2.828427125.

Subproblem 1

m2 + 4 = 2.828427125 Simplifying m2 + 4 = 2.828427125 Reorder the terms: 4 + m2 = 2.828427125 Solving 4 + m2 = 2.828427125 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + m2 = 2.828427125 + -4 Combine like terms: 4 + -4 = 0 0 + m2 = 2.828427125 + -4 m2 = 2.828427125 + -4 Combine like terms: 2.828427125 + -4 = -1.171572875 m2 = -1.171572875 Simplifying m2 = -1.171572875 Reorder the terms: 1.171572875 + m2 = -1.171572875 + 1.171572875 Combine like terms: -1.171572875 + 1.171572875 = 0.000000000 1.171572875 + m2 = 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

m2 + 4 = -2.828427125 Simplifying m2 + 4 = -2.828427125 Reorder the terms: 4 + m2 = -2.828427125 Solving 4 + m2 = -2.828427125 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + m2 = -2.828427125 + -4 Combine like terms: 4 + -4 = 0 0 + m2 = -2.828427125 + -4 m2 = -2.828427125 + -4 Combine like terms: -2.828427125 + -4 = -6.828427125 m2 = -6.828427125 Simplifying m2 = -6.828427125 Reorder the terms: 6.828427125 + m2 = -6.828427125 + 6.828427125 Combine like terms: -6.828427125 + 6.828427125 = 0.000000000 6.828427125 + m2 = 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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