x^4+15x^2+10=0

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Solution for x^4+15x^2+10=0 equation:


Simplifying
x4 + 15x2 + 10 = 0

Reorder the terms:
10 + 15x2 + x4 = 0

Solving
10 + 15x2 + 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 + 15x2 + -10 + x4 = 0 + -10

Reorder the terms:
10 + -10 + 15x2 + x4 = 0 + -10

Combine like terms: 10 + -10 = 0
0 + 15x2 + x4 = 0 + -10
15x2 + x4 = 0 + -10

Combine like terms: 0 + -10 = -10
15x2 + x4 = -10

The x term is 15x2.  Take half its coefficient (7.5).
Square it (56.25) and add it to both sides.

Add '56.25' to each side of the equation.
15x2 + 56.25 + x4 = -10 + 56.25

Reorder the terms:
56.25 + 15x2 + x4 = -10 + 56.25

Combine like terms: -10 + 56.25 = 46.25
56.25 + 15x2 + x4 = 46.25

Factor a perfect square on the left side:
(x2 + 7.5)(x2 + 7.5) = 46.25

Calculate the square root of the right side: 6.800735254

Break this problem into two subproblems by setting 
(x2 + 7.5) equal to 6.800735254 and -6.800735254.

Subproblem 1

x2 + 7.5 = 6.800735254 Simplifying x2 + 7.5 = 6.800735254 Reorder the terms: 7.5 + x2 = 6.800735254 Solving 7.5 + x2 = 6.800735254 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7.5' to each side of the equation. 7.5 + -7.5 + x2 = 6.800735254 + -7.5 Combine like terms: 7.5 + -7.5 = 0.0 0.0 + x2 = 6.800735254 + -7.5 x2 = 6.800735254 + -7.5 Combine like terms: 6.800735254 + -7.5 = -0.699264746 x2 = -0.699264746 Simplifying x2 = -0.699264746 Reorder the terms: 0.699264746 + x2 = -0.699264746 + 0.699264746 Combine like terms: -0.699264746 + 0.699264746 = 0.000000000 0.699264746 + 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 + 7.5 = -6.800735254 Simplifying x2 + 7.5 = -6.800735254 Reorder the terms: 7.5 + x2 = -6.800735254 Solving 7.5 + x2 = -6.800735254 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7.5' to each side of the equation. 7.5 + -7.5 + x2 = -6.800735254 + -7.5 Combine like terms: 7.5 + -7.5 = 0.0 0.0 + x2 = -6.800735254 + -7.5 x2 = -6.800735254 + -7.5 Combine like terms: -6.800735254 + -7.5 = -14.300735254 x2 = -14.300735254 Simplifying x2 = -14.300735254 Reorder the terms: 14.300735254 + x2 = -14.300735254 + 14.300735254 Combine like terms: -14.300735254 + 14.300735254 = 0.000000000 14.300735254 + 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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