5w^2+26w-5=0

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Solution for 5w^2+26w-5=0 equation:


Simplifying
5w2 + 26w + -5 = 0

Reorder the terms:
-5 + 26w + 5w2 = 0

Solving
-5 + 26w + 5w2 = 0

Solving for variable 'w'.

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

Divide each side by '5'.
-1 + 5.2w + w2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 5.2w + 1 + w2 = 0 + 1

Reorder the terms:
-1 + 1 + 5.2w + w2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 5.2w + w2 = 0 + 1
5.2w + w2 = 0 + 1

Combine like terms: 0 + 1 = 1
5.2w + w2 = 1

The w term is 5.2w.  Take half its coefficient (2.6).
Square it (6.76) and add it to both sides.

Add '6.76' to each side of the equation.
5.2w + 6.76 + w2 = 1 + 6.76

Reorder the terms:
6.76 + 5.2w + w2 = 1 + 6.76

Combine like terms: 1 + 6.76 = 7.76
6.76 + 5.2w + w2 = 7.76

Factor a perfect square on the left side:
(w + 2.6)(w + 2.6) = 7.76

Calculate the square root of the right side: 2.785677655

Break this problem into two subproblems by setting 
(w + 2.6) equal to 2.785677655 and -2.785677655.

Subproblem 1

w + 2.6 = 2.785677655 Simplifying w + 2.6 = 2.785677655 Reorder the terms: 2.6 + w = 2.785677655 Solving 2.6 + w = 2.785677655 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-2.6' to each side of the equation. 2.6 + -2.6 + w = 2.785677655 + -2.6 Combine like terms: 2.6 + -2.6 = 0.0 0.0 + w = 2.785677655 + -2.6 w = 2.785677655 + -2.6 Combine like terms: 2.785677655 + -2.6 = 0.185677655 w = 0.185677655 Simplifying w = 0.185677655

Subproblem 2

w + 2.6 = -2.785677655 Simplifying w + 2.6 = -2.785677655 Reorder the terms: 2.6 + w = -2.785677655 Solving 2.6 + w = -2.785677655 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-2.6' to each side of the equation. 2.6 + -2.6 + w = -2.785677655 + -2.6 Combine like terms: 2.6 + -2.6 = 0.0 0.0 + w = -2.785677655 + -2.6 w = -2.785677655 + -2.6 Combine like terms: -2.785677655 + -2.6 = -5.385677655 w = -5.385677655 Simplifying w = -5.385677655

Solution

The solution to the problem is based on the solutions from the subproblems. w = {0.185677655, -5.385677655}

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