w*(w+2)=98

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Solution for w*(w+2)=98 equation:


Simplifying
w(w + 2) = 98

Reorder the terms:
w(2 + w) = 98
(2 * w + w * w) = 98
(2w + w2) = 98

Solving
2w + w2 = 98

Solving for variable 'w'.

Reorder the terms:
-98 + 2w + w2 = 98 + -98

Combine like terms: 98 + -98 = 0
-98 + 2w + w2 = 0

Begin completing the square.

Move the constant term to the right:

Add '98' to each side of the equation.
-98 + 2w + 98 + w2 = 0 + 98

Reorder the terms:
-98 + 98 + 2w + w2 = 0 + 98

Combine like terms: -98 + 98 = 0
0 + 2w + w2 = 0 + 98
2w + w2 = 0 + 98

Combine like terms: 0 + 98 = 98
2w + w2 = 98

The w term is 2w.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2w + 1 + w2 = 98 + 1

Reorder the terms:
1 + 2w + w2 = 98 + 1

Combine like terms: 98 + 1 = 99
1 + 2w + w2 = 99

Factor a perfect square on the left side:
(w + 1)(w + 1) = 99

Calculate the square root of the right side: 9.949874371

Break this problem into two subproblems by setting 
(w + 1) equal to 9.949874371 and -9.949874371.

Subproblem 1

w + 1 = 9.949874371 Simplifying w + 1 = 9.949874371 Reorder the terms: 1 + w = 9.949874371 Solving 1 + w = 9.949874371 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + w = 9.949874371 + -1 Combine like terms: 1 + -1 = 0 0 + w = 9.949874371 + -1 w = 9.949874371 + -1 Combine like terms: 9.949874371 + -1 = 8.949874371 w = 8.949874371 Simplifying w = 8.949874371

Subproblem 2

w + 1 = -9.949874371 Simplifying w + 1 = -9.949874371 Reorder the terms: 1 + w = -9.949874371 Solving 1 + w = -9.949874371 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + w = -9.949874371 + -1 Combine like terms: 1 + -1 = 0 0 + w = -9.949874371 + -1 w = -9.949874371 + -1 Combine like terms: -9.949874371 + -1 = -10.949874371 w = -10.949874371 Simplifying w = -10.949874371

Solution

The solution to the problem is based on the solutions from the subproblems. w = {8.949874371, -10.949874371}

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