w^3-w(w^2+2w-1)+2=

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Solution for w^3-w(w^2+2w-1)+2= equation:


Simplifying
w3 + -1w(w2 + 2w + -1) + 2 = 0

Reorder the terms:
w3 + -1w(-1 + 2w + w2) + 2 = 0
w3 + (-1 * -1w + 2w * -1w + w2 * -1w) + 2 = 0
w3 + (1w + -2w2 + -1w3) + 2 = 0

Reorder the terms:
2 + 1w + -2w2 + w3 + -1w3 = 0

Combine like terms: w3 + -1w3 = 0
2 + 1w + -2w2 + 0 = 0
2 + 1w + -2w2 = 0

Solving
2 + 1w + -2w2 = 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'.
-1 + -0.5w + w2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -0.5w + 1 + w2 = 0 + 1

Reorder the terms:
-1 + 1 + -0.5w + w2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -0.5w + w2 = 0 + 1
-0.5w + w2 = 0 + 1

Combine like terms: 0 + 1 = 1
-0.5w + w2 = 1

The w term is -0.5w.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5w + 0.0625 + w2 = 1 + 0.0625

Reorder the terms:
0.0625 + -0.5w + w2 = 1 + 0.0625

Combine like terms: 1 + 0.0625 = 1.0625
0.0625 + -0.5w + w2 = 1.0625

Factor a perfect square on the left side:
(w + -0.25)(w + -0.25) = 1.0625

Calculate the square root of the right side: 1.030776406

Break this problem into two subproblems by setting 
(w + -0.25) equal to 1.030776406 and -1.030776406.

Subproblem 1

w + -0.25 = 1.030776406 Simplifying w + -0.25 = 1.030776406 Reorder the terms: -0.25 + w = 1.030776406 Solving -0.25 + w = 1.030776406 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + w = 1.030776406 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + w = 1.030776406 + 0.25 w = 1.030776406 + 0.25 Combine like terms: 1.030776406 + 0.25 = 1.280776406 w = 1.280776406 Simplifying w = 1.280776406

Subproblem 2

w + -0.25 = -1.030776406 Simplifying w + -0.25 = -1.030776406 Reorder the terms: -0.25 + w = -1.030776406 Solving -0.25 + w = -1.030776406 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + w = -1.030776406 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + w = -1.030776406 + 0.25 w = -1.030776406 + 0.25 Combine like terms: -1.030776406 + 0.25 = -0.780776406 w = -0.780776406 Simplifying w = -0.780776406

Solution

The solution to the problem is based on the solutions from the subproblems. w = {1.280776406, -0.780776406}

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