5w^2-4w-440=0

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Solution for 5w^2-4w-440=0 equation:


Simplifying
5w2 + -4w + -440 = 0

Reorder the terms:
-440 + -4w + 5w2 = 0

Solving
-440 + -4w + 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'.
-88 + -0.8w + w2 = 0

Move the constant term to the right:

Add '88' to each side of the equation.
-88 + -0.8w + 88 + w2 = 0 + 88

Reorder the terms:
-88 + 88 + -0.8w + w2 = 0 + 88

Combine like terms: -88 + 88 = 0
0 + -0.8w + w2 = 0 + 88
-0.8w + w2 = 0 + 88

Combine like terms: 0 + 88 = 88
-0.8w + w2 = 88

The w term is -0.8w.  Take half its coefficient (-0.4).
Square it (0.16) and add it to both sides.

Add '0.16' to each side of the equation.
-0.8w + 0.16 + w2 = 88 + 0.16

Reorder the terms:
0.16 + -0.8w + w2 = 88 + 0.16

Combine like terms: 88 + 0.16 = 88.16
0.16 + -0.8w + w2 = 88.16

Factor a perfect square on the left side:
(w + -0.4)(w + -0.4) = 88.16

Calculate the square root of the right side: 9.389355675

Break this problem into two subproblems by setting 
(w + -0.4) equal to 9.389355675 and -9.389355675.

Subproblem 1

w + -0.4 = 9.389355675 Simplifying w + -0.4 = 9.389355675 Reorder the terms: -0.4 + w = 9.389355675 Solving -0.4 + w = 9.389355675 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + w = 9.389355675 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + w = 9.389355675 + 0.4 w = 9.389355675 + 0.4 Combine like terms: 9.389355675 + 0.4 = 9.789355675 w = 9.789355675 Simplifying w = 9.789355675

Subproblem 2

w + -0.4 = -9.389355675 Simplifying w + -0.4 = -9.389355675 Reorder the terms: -0.4 + w = -9.389355675 Solving -0.4 + w = -9.389355675 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + w = -9.389355675 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + w = -9.389355675 + 0.4 w = -9.389355675 + 0.4 Combine like terms: -9.389355675 + 0.4 = -8.989355675 w = -8.989355675 Simplifying w = -8.989355675

Solution

The solution to the problem is based on the solutions from the subproblems. w = {9.789355675, -8.989355675}

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