x^4-4x^2-10=0

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Solution for x^4-4x^2-10=0 equation:


Simplifying
x4 + -4x2 + -10 = 0

Reorder the terms:
-10 + -4x2 + x4 = 0

Solving
-10 + -4x2 + 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 + -4x2 + 10 + x4 = 0 + 10

Reorder the terms:
-10 + 10 + -4x2 + x4 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + -4x2 + x4 = 0 + 10
-4x2 + x4 = 0 + 10

Combine like terms: 0 + 10 = 10
-4x2 + x4 = 10

The x term is -4x2.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x2 + 4 + x4 = 10 + 4

Reorder the terms:
4 + -4x2 + x4 = 10 + 4

Combine like terms: 10 + 4 = 14
4 + -4x2 + x4 = 14

Factor a perfect square on the left side:
(x2 + -2)(x2 + -2) = 14

Calculate the square root of the right side: 3.741657387

Break this problem into two subproblems by setting 
(x2 + -2) equal to 3.741657387 and -3.741657387.

Subproblem 1

x2 + -2 = 3.741657387 Simplifying x2 + -2 = 3.741657387 Reorder the terms: -2 + x2 = 3.741657387 Solving -2 + x2 = 3.741657387 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x2 = 3.741657387 + 2 Combine like terms: -2 + 2 = 0 0 + x2 = 3.741657387 + 2 x2 = 3.741657387 + 2 Combine like terms: 3.741657387 + 2 = 5.741657387 x2 = 5.741657387 Simplifying x2 = 5.741657387 Take the square root of each side: x = {-2.396175575, 2.396175575}

Subproblem 2

x2 + -2 = -3.741657387 Simplifying x2 + -2 = -3.741657387 Reorder the terms: -2 + x2 = -3.741657387 Solving -2 + x2 = -3.741657387 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x2 = -3.741657387 + 2 Combine like terms: -2 + 2 = 0 0 + x2 = -3.741657387 + 2 x2 = -3.741657387 + 2 Combine like terms: -3.741657387 + 2 = -1.741657387 x2 = -1.741657387 Simplifying x2 = -1.741657387 Reorder the terms: 1.741657387 + x2 = -1.741657387 + 1.741657387 Combine like terms: -1.741657387 + 1.741657387 = 0.000000000 1.741657387 + 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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