8x^6+7x^3+1=

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Solution for 8x^6+7x^3+1= equation:


Simplifying
8x6 + 7x3 + 1 = 0

Reorder the terms:
1 + 7x3 + 8x6 = 0

Solving
1 + 7x3 + 8x6 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
8 the coefficient of the squared term: 

Divide each side by '8'.
0.125 + 0.875x3 + x6 = 0

Move the constant term to the right:

Add '-0.125' to each side of the equation.
0.125 + 0.875x3 + -0.125 + x6 = 0 + -0.125

Reorder the terms:
0.125 + -0.125 + 0.875x3 + x6 = 0 + -0.125

Combine like terms: 0.125 + -0.125 = 0.000
0.000 + 0.875x3 + x6 = 0 + -0.125
0.875x3 + x6 = 0 + -0.125

Combine like terms: 0 + -0.125 = -0.125
0.875x3 + x6 = -0.125

The x term is 0.875x3.  Take half its coefficient (0.4375).
Square it (0.19140625) and add it to both sides.

Add '0.19140625' to each side of the equation.
0.875x3 + 0.19140625 + x6 = -0.125 + 0.19140625

Reorder the terms:
0.19140625 + 0.875x3 + x6 = -0.125 + 0.19140625

Combine like terms: -0.125 + 0.19140625 = 0.06640625
0.19140625 + 0.875x3 + x6 = 0.06640625

Factor a perfect square on the left side:
(x3 + 0.4375)(x3 + 0.4375) = 0.06640625

Calculate the square root of the right side: 0.257694102

Break this problem into two subproblems by setting 
(x3 + 0.4375) equal to 0.257694102 and -0.257694102.

Subproblem 1

x3 + 0.4375 = 0.257694102 Simplifying x3 + 0.4375 = 0.257694102 Reorder the terms: 0.4375 + x3 = 0.257694102 Solving 0.4375 + x3 = 0.257694102 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4375' to each side of the equation. 0.4375 + -0.4375 + x3 = 0.257694102 + -0.4375 Combine like terms: 0.4375 + -0.4375 = 0.0000 0.0000 + x3 = 0.257694102 + -0.4375 x3 = 0.257694102 + -0.4375 Combine like terms: 0.257694102 + -0.4375 = -0.179805898 x3 = -0.179805898 Simplifying x3 = -0.179805898 Reorder the terms: 0.179805898 + x3 = -0.179805898 + 0.179805898 Combine like terms: -0.179805898 + 0.179805898 = 0.000000000 0.179805898 + x3 = 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

x3 + 0.4375 = -0.257694102 Simplifying x3 + 0.4375 = -0.257694102 Reorder the terms: 0.4375 + x3 = -0.257694102 Solving 0.4375 + x3 = -0.257694102 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4375' to each side of the equation. 0.4375 + -0.4375 + x3 = -0.257694102 + -0.4375 Combine like terms: 0.4375 + -0.4375 = 0.0000 0.0000 + x3 = -0.257694102 + -0.4375 x3 = -0.257694102 + -0.4375 Combine like terms: -0.257694102 + -0.4375 = -0.695194102 x3 = -0.695194102 Simplifying x3 = -0.695194102 Reorder the terms: 0.695194102 + x3 = -0.695194102 + 0.695194102 Combine like terms: -0.695194102 + 0.695194102 = 0.000000000 0.695194102 + x3 = 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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