5w^2+2w-63=0

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Solution for 5w^2+2w-63=0 equation:


Simplifying
5w2 + 2w + -63 = 0

Reorder the terms:
-63 + 2w + 5w2 = 0

Solving
-63 + 2w + 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'.
-12.6 + 0.4w + w2 = 0

Move the constant term to the right:

Add '12.6' to each side of the equation.
-12.6 + 0.4w + 12.6 + w2 = 0 + 12.6

Reorder the terms:
-12.6 + 12.6 + 0.4w + w2 = 0 + 12.6

Combine like terms: -12.6 + 12.6 = 0.0
0.0 + 0.4w + w2 = 0 + 12.6
0.4w + w2 = 0 + 12.6

Combine like terms: 0 + 12.6 = 12.6
0.4w + w2 = 12.6

The w term is 0.4w.  Take half its coefficient (0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
0.4w + 0.04 + w2 = 12.6 + 0.04

Reorder the terms:
0.04 + 0.4w + w2 = 12.6 + 0.04

Combine like terms: 12.6 + 0.04 = 12.64
0.04 + 0.4w + w2 = 12.64

Factor a perfect square on the left side:
(w + 0.2)(w + 0.2) = 12.64

Calculate the square root of the right side: 3.555277767

Break this problem into two subproblems by setting 
(w + 0.2) equal to 3.555277767 and -3.555277767.

Subproblem 1

w + 0.2 = 3.555277767 Simplifying w + 0.2 = 3.555277767 Reorder the terms: 0.2 + w = 3.555277767 Solving 0.2 + w = 3.555277767 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-0.2' to each side of the equation. 0.2 + -0.2 + w = 3.555277767 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + w = 3.555277767 + -0.2 w = 3.555277767 + -0.2 Combine like terms: 3.555277767 + -0.2 = 3.355277767 w = 3.355277767 Simplifying w = 3.355277767

Subproblem 2

w + 0.2 = -3.555277767 Simplifying w + 0.2 = -3.555277767 Reorder the terms: 0.2 + w = -3.555277767 Solving 0.2 + w = -3.555277767 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-0.2' to each side of the equation. 0.2 + -0.2 + w = -3.555277767 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + w = -3.555277767 + -0.2 w = -3.555277767 + -0.2 Combine like terms: -3.555277767 + -0.2 = -3.755277767 w = -3.755277767 Simplifying w = -3.755277767

Solution

The solution to the problem is based on the solutions from the subproblems. w = {3.355277767, -3.755277767}

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