x^4+30x^2-10=0

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Solution for x^4+30x^2-10=0 equation:


Simplifying
x4 + 30x2 + -10 = 0

Reorder the terms:
-10 + 30x2 + x4 = 0

Solving
-10 + 30x2 + 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 + 30x2 + 10 + x4 = 0 + 10

Reorder the terms:
-10 + 10 + 30x2 + x4 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 30x2 + x4 = 0 + 10
30x2 + x4 = 0 + 10

Combine like terms: 0 + 10 = 10
30x2 + x4 = 10

The x term is 30x2.  Take half its coefficient (15).
Square it (225) and add it to both sides.

Add '225' to each side of the equation.
30x2 + 225 + x4 = 10 + 225

Reorder the terms:
225 + 30x2 + x4 = 10 + 225

Combine like terms: 10 + 225 = 235
225 + 30x2 + x4 = 235

Factor a perfect square on the left side:
(x2 + 15)(x2 + 15) = 235

Calculate the square root of the right side: 15.329709717

Break this problem into two subproblems by setting 
(x2 + 15) equal to 15.329709717 and -15.329709717.

Subproblem 1

x2 + 15 = 15.329709717 Simplifying x2 + 15 = 15.329709717 Reorder the terms: 15 + x2 = 15.329709717 Solving 15 + x2 = 15.329709717 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + x2 = 15.329709717 + -15 Combine like terms: 15 + -15 = 0 0 + x2 = 15.329709717 + -15 x2 = 15.329709717 + -15 Combine like terms: 15.329709717 + -15 = 0.329709717 x2 = 0.329709717 Simplifying x2 = 0.329709717 Take the square root of each side: x = {-0.57420355, 0.57420355}

Subproblem 2

x2 + 15 = -15.329709717 Simplifying x2 + 15 = -15.329709717 Reorder the terms: 15 + x2 = -15.329709717 Solving 15 + x2 = -15.329709717 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + x2 = -15.329709717 + -15 Combine like terms: 15 + -15 = 0 0 + x2 = -15.329709717 + -15 x2 = -15.329709717 + -15 Combine like terms: -15.329709717 + -15 = -30.329709717 x2 = -30.329709717 Simplifying x2 = -30.329709717 Reorder the terms: 30.329709717 + x2 = -30.329709717 + 30.329709717 Combine like terms: -30.329709717 + 30.329709717 = 0.000000000 30.329709717 + 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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