2w^2-3w-279=0

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Solution for 2w^2-3w-279=0 equation:


Simplifying
2w2 + -3w + -279 = 0

Reorder the terms:
-279 + -3w + 2w2 = 0

Solving
-279 + -3w + 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'.
-139.5 + -1.5w + w2 = 0

Move the constant term to the right:

Add '139.5' to each side of the equation.
-139.5 + -1.5w + 139.5 + w2 = 0 + 139.5

Reorder the terms:
-139.5 + 139.5 + -1.5w + w2 = 0 + 139.5

Combine like terms: -139.5 + 139.5 = 0.0
0.0 + -1.5w + w2 = 0 + 139.5
-1.5w + w2 = 0 + 139.5

Combine like terms: 0 + 139.5 = 139.5
-1.5w + w2 = 139.5

The w term is -1.5w.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5w + 0.5625 + w2 = 139.5 + 0.5625

Reorder the terms:
0.5625 + -1.5w + w2 = 139.5 + 0.5625

Combine like terms: 139.5 + 0.5625 = 140.0625
0.5625 + -1.5w + w2 = 140.0625

Factor a perfect square on the left side:
(w + -0.75)(w + -0.75) = 140.0625

Calculate the square root of the right side: 11.834800379

Break this problem into two subproblems by setting 
(w + -0.75) equal to 11.834800379 and -11.834800379.

Subproblem 1

w + -0.75 = 11.834800379 Simplifying w + -0.75 = 11.834800379 Reorder the terms: -0.75 + w = 11.834800379 Solving -0.75 + w = 11.834800379 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + w = 11.834800379 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + w = 11.834800379 + 0.75 w = 11.834800379 + 0.75 Combine like terms: 11.834800379 + 0.75 = 12.584800379 w = 12.584800379 Simplifying w = 12.584800379

Subproblem 2

w + -0.75 = -11.834800379 Simplifying w + -0.75 = -11.834800379 Reorder the terms: -0.75 + w = -11.834800379 Solving -0.75 + w = -11.834800379 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + w = -11.834800379 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + w = -11.834800379 + 0.75 w = -11.834800379 + 0.75 Combine like terms: -11.834800379 + 0.75 = -11.084800379 w = -11.084800379 Simplifying w = -11.084800379

Solution

The solution to the problem is based on the solutions from the subproblems. w = {12.584800379, -11.084800379}

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