w^2+6w-28=0

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Solution for w^2+6w-28=0 equation:


Simplifying
w2 + 6w + -28 = 0

Reorder the terms:
-28 + 6w + w2 = 0

Solving
-28 + 6w + w2 = 0

Solving for variable 'w'.

Begin completing the square.

Move the constant term to the right:

Add '28' to each side of the equation.
-28 + 6w + 28 + w2 = 0 + 28

Reorder the terms:
-28 + 28 + 6w + w2 = 0 + 28

Combine like terms: -28 + 28 = 0
0 + 6w + w2 = 0 + 28
6w + w2 = 0 + 28

Combine like terms: 0 + 28 = 28
6w + w2 = 28

The w term is 6w.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6w + 9 + w2 = 28 + 9

Reorder the terms:
9 + 6w + w2 = 28 + 9

Combine like terms: 28 + 9 = 37
9 + 6w + w2 = 37

Factor a perfect square on the left side:
(w + 3)(w + 3) = 37

Calculate the square root of the right side: 6.08276253

Break this problem into two subproblems by setting 
(w + 3) equal to 6.08276253 and -6.08276253.

Subproblem 1

w + 3 = 6.08276253 Simplifying w + 3 = 6.08276253 Reorder the terms: 3 + w = 6.08276253 Solving 3 + w = 6.08276253 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + w = 6.08276253 + -3 Combine like terms: 3 + -3 = 0 0 + w = 6.08276253 + -3 w = 6.08276253 + -3 Combine like terms: 6.08276253 + -3 = 3.08276253 w = 3.08276253 Simplifying w = 3.08276253

Subproblem 2

w + 3 = -6.08276253 Simplifying w + 3 = -6.08276253 Reorder the terms: 3 + w = -6.08276253 Solving 3 + w = -6.08276253 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + w = -6.08276253 + -3 Combine like terms: 3 + -3 = 0 0 + w = -6.08276253 + -3 w = -6.08276253 + -3 Combine like terms: -6.08276253 + -3 = -9.08276253 w = -9.08276253 Simplifying w = -9.08276253

Solution

The solution to the problem is based on the solutions from the subproblems. w = {3.08276253, -9.08276253}

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