14x^4-11x^2-36=0

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Solution for 14x^4-11x^2-36=0 equation:


Simplifying
14x4 + -11x2 + -36 = 0

Reorder the terms:
-36 + -11x2 + 14x4 = 0

Solving
-36 + -11x2 + 14x4 = 0

Solving for variable 'x'.

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

Divide each side by '14'.
-2.571428571 + -0.7857142857x2 + x4 = 0

Move the constant term to the right:

Add '2.571428571' to each side of the equation.
-2.571428571 + -0.7857142857x2 + 2.571428571 + x4 = 0 + 2.571428571

Reorder the terms:
-2.571428571 + 2.571428571 + -0.7857142857x2 + x4 = 0 + 2.571428571

Combine like terms: -2.571428571 + 2.571428571 = 0.000000000
0.000000000 + -0.7857142857x2 + x4 = 0 + 2.571428571
-0.7857142857x2 + x4 = 0 + 2.571428571

Combine like terms: 0 + 2.571428571 = 2.571428571
-0.7857142857x2 + x4 = 2.571428571

The x term is -0.7857142857x2.  Take half its coefficient (-0.3928571429).
Square it (0.1543367347) and add it to both sides.

Add '0.1543367347' to each side of the equation.
-0.7857142857x2 + 0.1543367347 + x4 = 2.571428571 + 0.1543367347

Reorder the terms:
0.1543367347 + -0.7857142857x2 + x4 = 2.571428571 + 0.1543367347

Combine like terms: 2.571428571 + 0.1543367347 = 2.7257653057
0.1543367347 + -0.7857142857x2 + x4 = 2.7257653057

Factor a perfect square on the left side:
(x2 + -0.3928571429)(x2 + -0.3928571429) = 2.7257653057

Calculate the square root of the right side: 1.65098919

Break this problem into two subproblems by setting 
(x2 + -0.3928571429) equal to 1.65098919 and -1.65098919.

Subproblem 1

x2 + -0.3928571429 = 1.65098919 Simplifying x2 + -0.3928571429 = 1.65098919 Reorder the terms: -0.3928571429 + x2 = 1.65098919 Solving -0.3928571429 + x2 = 1.65098919 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3928571429' to each side of the equation. -0.3928571429 + 0.3928571429 + x2 = 1.65098919 + 0.3928571429 Combine like terms: -0.3928571429 + 0.3928571429 = 0.0000000000 0.0000000000 + x2 = 1.65098919 + 0.3928571429 x2 = 1.65098919 + 0.3928571429 Combine like terms: 1.65098919 + 0.3928571429 = 2.0438463329 x2 = 2.0438463329 Simplifying x2 = 2.0438463329 Take the square root of each side: x = {-1.429631537, 1.429631537}

Subproblem 2

x2 + -0.3928571429 = -1.65098919 Simplifying x2 + -0.3928571429 = -1.65098919 Reorder the terms: -0.3928571429 + x2 = -1.65098919 Solving -0.3928571429 + x2 = -1.65098919 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3928571429' to each side of the equation. -0.3928571429 + 0.3928571429 + x2 = -1.65098919 + 0.3928571429 Combine like terms: -0.3928571429 + 0.3928571429 = 0.0000000000 0.0000000000 + x2 = -1.65098919 + 0.3928571429 x2 = -1.65098919 + 0.3928571429 Combine like terms: -1.65098919 + 0.3928571429 = -1.2581320471 x2 = -1.2581320471 Simplifying x2 = -1.2581320471 Reorder the terms: 1.2581320471 + x2 = -1.2581320471 + 1.2581320471 Combine like terms: -1.2581320471 + 1.2581320471 = 0.0000000000 1.2581320471 + x2 = 0.0000000000 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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