(36x^4-30x^2+3)=8

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Solution for (36x^4-30x^2+3)=8 equation:


Simplifying
(36x4 + -30x2 + 3) = 8

Reorder the terms:
(3 + -30x2 + 36x4) = 8

Remove parenthesis around (3 + -30x2 + 36x4)
3 + -30x2 + 36x4 = 8

Solving
3 + -30x2 + 36x4 = 8

Solving for variable 'x'.

Reorder the terms:
3 + -8 + -30x2 + 36x4 = 8 + -8

Combine like terms: 3 + -8 = -5
-5 + -30x2 + 36x4 = 8 + -8

Combine like terms: 8 + -8 = 0
-5 + -30x2 + 36x4 = 0

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

Divide each side by '36'.
-0.1388888889 + -0.8333333333x2 + x4 = 0

Move the constant term to the right:

Add '0.1388888889' to each side of the equation.
-0.1388888889 + -0.8333333333x2 + 0.1388888889 + x4 = 0 + 0.1388888889

Reorder the terms:
-0.1388888889 + 0.1388888889 + -0.8333333333x2 + x4 = 0 + 0.1388888889

Combine like terms: -0.1388888889 + 0.1388888889 = 0.0000000000
0.0000000000 + -0.8333333333x2 + x4 = 0 + 0.1388888889
-0.8333333333x2 + x4 = 0 + 0.1388888889

Combine like terms: 0 + 0.1388888889 = 0.1388888889
-0.8333333333x2 + x4 = 0.1388888889

The x term is -0.8333333333x2.  Take half its coefficient (-0.4166666667).
Square it (0.1736111111) and add it to both sides.

Add '0.1736111111' to each side of the equation.
-0.8333333333x2 + 0.1736111111 + x4 = 0.1388888889 + 0.1736111111

Reorder the terms:
0.1736111111 + -0.8333333333x2 + x4 = 0.1388888889 + 0.1736111111

Combine like terms: 0.1388888889 + 0.1736111111 = 0.3125
0.1736111111 + -0.8333333333x2 + x4 = 0.3125

Factor a perfect square on the left side:
(x2 + -0.4166666667)(x2 + -0.4166666667) = 0.3125

Calculate the square root of the right side: 0.559016994

Break this problem into two subproblems by setting 
(x2 + -0.4166666667) equal to 0.559016994 and -0.559016994.

Subproblem 1

x2 + -0.4166666667 = 0.559016994 Simplifying x2 + -0.4166666667 = 0.559016994 Reorder the terms: -0.4166666667 + x2 = 0.559016994 Solving -0.4166666667 + x2 = 0.559016994 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4166666667' to each side of the equation. -0.4166666667 + 0.4166666667 + x2 = 0.559016994 + 0.4166666667 Combine like terms: -0.4166666667 + 0.4166666667 = 0.0000000000 0.0000000000 + x2 = 0.559016994 + 0.4166666667 x2 = 0.559016994 + 0.4166666667 Combine like terms: 0.559016994 + 0.4166666667 = 0.9756836607 x2 = 0.9756836607 Simplifying x2 = 0.9756836607 Take the square root of each side: x = {-0.987767007, 0.987767007}

Subproblem 2

x2 + -0.4166666667 = -0.559016994 Simplifying x2 + -0.4166666667 = -0.559016994 Reorder the terms: -0.4166666667 + x2 = -0.559016994 Solving -0.4166666667 + x2 = -0.559016994 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4166666667' to each side of the equation. -0.4166666667 + 0.4166666667 + x2 = -0.559016994 + 0.4166666667 Combine like terms: -0.4166666667 + 0.4166666667 = 0.0000000000 0.0000000000 + x2 = -0.559016994 + 0.4166666667 x2 = -0.559016994 + 0.4166666667 Combine like terms: -0.559016994 + 0.4166666667 = -0.1423503273 x2 = -0.1423503273 Simplifying x2 = -0.1423503273 Reorder the terms: 0.1423503273 + x2 = -0.1423503273 + 0.1423503273 Combine like terms: -0.1423503273 + 0.1423503273 = 0.0000000000 0.1423503273 + 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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