4w^2+3w-13=0

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Solution for 4w^2+3w-13=0 equation:


Simplifying
4w2 + 3w + -13 = 0

Reorder the terms:
-13 + 3w + 4w2 = 0

Solving
-13 + 3w + 4w2 = 0

Solving for variable 'w'.

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

Divide each side by '4'.
-3.25 + 0.75w + w2 = 0

Move the constant term to the right:

Add '3.25' to each side of the equation.
-3.25 + 0.75w + 3.25 + w2 = 0 + 3.25

Reorder the terms:
-3.25 + 3.25 + 0.75w + w2 = 0 + 3.25

Combine like terms: -3.25 + 3.25 = 0.00
0.00 + 0.75w + w2 = 0 + 3.25
0.75w + w2 = 0 + 3.25

Combine like terms: 0 + 3.25 = 3.25
0.75w + w2 = 3.25

The w term is 0.75w.  Take half its coefficient (0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
0.75w + 0.140625 + w2 = 3.25 + 0.140625

Reorder the terms:
0.140625 + 0.75w + w2 = 3.25 + 0.140625

Combine like terms: 3.25 + 0.140625 = 3.390625
0.140625 + 0.75w + w2 = 3.390625

Factor a perfect square on the left side:
(w + 0.375)(w + 0.375) = 3.390625

Calculate the square root of the right side: 1.841364983

Break this problem into two subproblems by setting 
(w + 0.375) equal to 1.841364983 and -1.841364983.

Subproblem 1

w + 0.375 = 1.841364983 Simplifying w + 0.375 = 1.841364983 Reorder the terms: 0.375 + w = 1.841364983 Solving 0.375 + w = 1.841364983 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + w = 1.841364983 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + w = 1.841364983 + -0.375 w = 1.841364983 + -0.375 Combine like terms: 1.841364983 + -0.375 = 1.466364983 w = 1.466364983 Simplifying w = 1.466364983

Subproblem 2

w + 0.375 = -1.841364983 Simplifying w + 0.375 = -1.841364983 Reorder the terms: 0.375 + w = -1.841364983 Solving 0.375 + w = -1.841364983 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + w = -1.841364983 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + w = -1.841364983 + -0.375 w = -1.841364983 + -0.375 Combine like terms: -1.841364983 + -0.375 = -2.216364983 w = -2.216364983 Simplifying w = -2.216364983

Solution

The solution to the problem is based on the solutions from the subproblems. w = {1.466364983, -2.216364983}

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