36x^4-25x^2=4

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Solution for 36x^4-25x^2=4 equation:


Simplifying
36x4 + -25x2 = 4

Reorder the terms:
-25x2 + 36x4 = 4

Solving
-25x2 + 36x4 = 4

Solving for variable 'x'.

Reorder the terms:
-4 + -25x2 + 36x4 = 4 + -4

Combine like terms: 4 + -4 = 0
-4 + -25x2 + 36x4 = 0

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

Divide each side by '36'.
-0.1111111111 + -0.6944444444x2 + x4 = 0

Move the constant term to the right:

Add '0.1111111111' to each side of the equation.
-0.1111111111 + -0.6944444444x2 + 0.1111111111 + x4 = 0 + 0.1111111111

Reorder the terms:
-0.1111111111 + 0.1111111111 + -0.6944444444x2 + x4 = 0 + 0.1111111111

Combine like terms: -0.1111111111 + 0.1111111111 = 0.0000000000
0.0000000000 + -0.6944444444x2 + x4 = 0 + 0.1111111111
-0.6944444444x2 + x4 = 0 + 0.1111111111

Combine like terms: 0 + 0.1111111111 = 0.1111111111
-0.6944444444x2 + x4 = 0.1111111111

The x term is -0.6944444444x2.  Take half its coefficient (-0.3472222222).
Square it (0.1205632716) and add it to both sides.

Add '0.1205632716' to each side of the equation.
-0.6944444444x2 + 0.1205632716 + x4 = 0.1111111111 + 0.1205632716

Reorder the terms:
0.1205632716 + -0.6944444444x2 + x4 = 0.1111111111 + 0.1205632716

Combine like terms: 0.1111111111 + 0.1205632716 = 0.2316743827
0.1205632716 + -0.6944444444x2 + x4 = 0.2316743827

Factor a perfect square on the left side:
(x2 + -0.3472222222)(x2 + -0.3472222222) = 0.2316743827

Calculate the square root of the right side: 0.481325651

Break this problem into two subproblems by setting 
(x2 + -0.3472222222) equal to 0.481325651 and -0.481325651.

Subproblem 1

x2 + -0.3472222222 = 0.481325651 Simplifying x2 + -0.3472222222 = 0.481325651 Reorder the terms: -0.3472222222 + x2 = 0.481325651 Solving -0.3472222222 + x2 = 0.481325651 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3472222222' to each side of the equation. -0.3472222222 + 0.3472222222 + x2 = 0.481325651 + 0.3472222222 Combine like terms: -0.3472222222 + 0.3472222222 = 0.0000000000 0.0000000000 + x2 = 0.481325651 + 0.3472222222 x2 = 0.481325651 + 0.3472222222 Combine like terms: 0.481325651 + 0.3472222222 = 0.8285478732 x2 = 0.8285478732 Simplifying x2 = 0.8285478732 Take the square root of each side: x = {-0.910246051, 0.910246051}

Subproblem 2

x2 + -0.3472222222 = -0.481325651 Simplifying x2 + -0.3472222222 = -0.481325651 Reorder the terms: -0.3472222222 + x2 = -0.481325651 Solving -0.3472222222 + x2 = -0.481325651 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3472222222' to each side of the equation. -0.3472222222 + 0.3472222222 + x2 = -0.481325651 + 0.3472222222 Combine like terms: -0.3472222222 + 0.3472222222 = 0.0000000000 0.0000000000 + x2 = -0.481325651 + 0.3472222222 x2 = -0.481325651 + 0.3472222222 Combine like terms: -0.481325651 + 0.3472222222 = -0.1341034288 x2 = -0.1341034288 Simplifying x2 = -0.1341034288 Reorder the terms: 0.1341034288 + x2 = -0.1341034288 + 0.1341034288 Combine like terms: -0.1341034288 + 0.1341034288 = 0.0000000000 0.1341034288 + 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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