2w^4-11w^2+6=0

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Solution for 2w^4-11w^2+6=0 equation:


Simplifying
2w4 + -11w2 + 6 = 0

Reorder the terms:
6 + -11w2 + 2w4 = 0

Solving
6 + -11w2 + 2w4 = 0

Solving for variable 'w'.

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

Divide each side by '2'.
3 + -5.5w2 + w4 = 0

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -5.5w2 + -3 + w4 = 0 + -3

Reorder the terms:
3 + -3 + -5.5w2 + w4 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -5.5w2 + w4 = 0 + -3
-5.5w2 + w4 = 0 + -3

Combine like terms: 0 + -3 = -3
-5.5w2 + w4 = -3

The w term is -5.5w2.  Take half its coefficient (-2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
-5.5w2 + 7.5625 + w4 = -3 + 7.5625

Reorder the terms:
7.5625 + -5.5w2 + w4 = -3 + 7.5625

Combine like terms: -3 + 7.5625 = 4.5625
7.5625 + -5.5w2 + w4 = 4.5625

Factor a perfect square on the left side:
(w2 + -2.75)(w2 + -2.75) = 4.5625

Calculate the square root of the right side: 2.136000936

Break this problem into two subproblems by setting 
(w2 + -2.75) equal to 2.136000936 and -2.136000936.

Subproblem 1

w2 + -2.75 = 2.136000936 Simplifying w2 + -2.75 = 2.136000936 Reorder the terms: -2.75 + w2 = 2.136000936 Solving -2.75 + w2 = 2.136000936 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + w2 = 2.136000936 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + w2 = 2.136000936 + 2.75 w2 = 2.136000936 + 2.75 Combine like terms: 2.136000936 + 2.75 = 4.886000936 w2 = 4.886000936 Simplifying w2 = 4.886000936 Take the square root of each side: w = {-2.210430034, 2.210430034}

Subproblem 2

w2 + -2.75 = -2.136000936 Simplifying w2 + -2.75 = -2.136000936 Reorder the terms: -2.75 + w2 = -2.136000936 Solving -2.75 + w2 = -2.136000936 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + w2 = -2.136000936 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + w2 = -2.136000936 + 2.75 w2 = -2.136000936 + 2.75 Combine like terms: -2.136000936 + 2.75 = 0.613999064 w2 = 0.613999064 Simplifying w2 = 0.613999064 Take the square root of each side: w = {-0.783580924, 0.783580924}

Solution

The solution to the problem is based on the solutions from the subproblems. w = {-2.210430034, 2.210430034, -0.783580924, 0.783580924}

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