w^2+8w=230

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Solution for w^2+8w=230 equation:


Simplifying
w2 + 8w = 230

Reorder the terms:
8w + w2 = 230

Solving
8w + w2 = 230

Solving for variable 'w'.

Reorder the terms:
-230 + 8w + w2 = 230 + -230

Combine like terms: 230 + -230 = 0
-230 + 8w + w2 = 0

Begin completing the square.

Move the constant term to the right:

Add '230' to each side of the equation.
-230 + 8w + 230 + w2 = 0 + 230

Reorder the terms:
-230 + 230 + 8w + w2 = 0 + 230

Combine like terms: -230 + 230 = 0
0 + 8w + w2 = 0 + 230
8w + w2 = 0 + 230

Combine like terms: 0 + 230 = 230
8w + w2 = 230

The w term is 8w.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8w + 16 + w2 = 230 + 16

Reorder the terms:
16 + 8w + w2 = 230 + 16

Combine like terms: 230 + 16 = 246
16 + 8w + w2 = 246

Factor a perfect square on the left side:
(w + 4)(w + 4) = 246

Calculate the square root of the right side: 15.684387141

Break this problem into two subproblems by setting 
(w + 4) equal to 15.684387141 and -15.684387141.

Subproblem 1

w + 4 = 15.684387141 Simplifying w + 4 = 15.684387141 Reorder the terms: 4 + w = 15.684387141 Solving 4 + w = 15.684387141 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + w = 15.684387141 + -4 Combine like terms: 4 + -4 = 0 0 + w = 15.684387141 + -4 w = 15.684387141 + -4 Combine like terms: 15.684387141 + -4 = 11.684387141 w = 11.684387141 Simplifying w = 11.684387141

Subproblem 2

w + 4 = -15.684387141 Simplifying w + 4 = -15.684387141 Reorder the terms: 4 + w = -15.684387141 Solving 4 + w = -15.684387141 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + w = -15.684387141 + -4 Combine like terms: 4 + -4 = 0 0 + w = -15.684387141 + -4 w = -15.684387141 + -4 Combine like terms: -15.684387141 + -4 = -19.684387141 w = -19.684387141 Simplifying w = -19.684387141

Solution

The solution to the problem is based on the solutions from the subproblems. w = {11.684387141, -19.684387141}

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