2w^2-8w-35=0

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Solution for 2w^2-8w-35=0 equation:


Simplifying
2w2 + -8w + -35 = 0

Reorder the terms:
-35 + -8w + 2w2 = 0

Solving
-35 + -8w + 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'.
-17.5 + -4w + w2 = 0

Move the constant term to the right:

Add '17.5' to each side of the equation.
-17.5 + -4w + 17.5 + w2 = 0 + 17.5

Reorder the terms:
-17.5 + 17.5 + -4w + w2 = 0 + 17.5

Combine like terms: -17.5 + 17.5 = 0.0
0.0 + -4w + w2 = 0 + 17.5
-4w + w2 = 0 + 17.5

Combine like terms: 0 + 17.5 = 17.5
-4w + w2 = 17.5

The w term is -4w.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4w + 4 + w2 = 17.5 + 4

Reorder the terms:
4 + -4w + w2 = 17.5 + 4

Combine like terms: 17.5 + 4 = 21.5
4 + -4w + w2 = 21.5

Factor a perfect square on the left side:
(w + -2)(w + -2) = 21.5

Calculate the square root of the right side: 4.636809248

Break this problem into two subproblems by setting 
(w + -2) equal to 4.636809248 and -4.636809248.

Subproblem 1

w + -2 = 4.636809248 Simplifying w + -2 = 4.636809248 Reorder the terms: -2 + w = 4.636809248 Solving -2 + w = 4.636809248 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + w = 4.636809248 + 2 Combine like terms: -2 + 2 = 0 0 + w = 4.636809248 + 2 w = 4.636809248 + 2 Combine like terms: 4.636809248 + 2 = 6.636809248 w = 6.636809248 Simplifying w = 6.636809248

Subproblem 2

w + -2 = -4.636809248 Simplifying w + -2 = -4.636809248 Reorder the terms: -2 + w = -4.636809248 Solving -2 + w = -4.636809248 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + w = -4.636809248 + 2 Combine like terms: -2 + 2 = 0 0 + w = -4.636809248 + 2 w = -4.636809248 + 2 Combine like terms: -4.636809248 + 2 = -2.636809248 w = -2.636809248 Simplifying w = -2.636809248

Solution

The solution to the problem is based on the solutions from the subproblems. w = {6.636809248, -2.636809248}

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