2w+w(w-10)=2w-19

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Solution for 2w+w(w-10)=2w-19 equation:


Simplifying
2w + w(w + -10) = 2w + -19

Reorder the terms:
2w + w(-10 + w) = 2w + -19
2w + (-10 * w + w * w) = 2w + -19
2w + (-10w + w2) = 2w + -19

Combine like terms: 2w + -10w = -8w
-8w + w2 = 2w + -19

Reorder the terms:
-8w + w2 = -19 + 2w

Solving
-8w + w2 = -19 + 2w

Solving for variable 'w'.

Reorder the terms:
19 + -8w + -2w + w2 = -19 + 2w + 19 + -2w

Combine like terms: -8w + -2w = -10w
19 + -10w + w2 = -19 + 2w + 19 + -2w

Reorder the terms:
19 + -10w + w2 = -19 + 19 + 2w + -2w

Combine like terms: -19 + 19 = 0
19 + -10w + w2 = 0 + 2w + -2w
19 + -10w + w2 = 2w + -2w

Combine like terms: 2w + -2w = 0
19 + -10w + w2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-19' to each side of the equation.
19 + -10w + -19 + w2 = 0 + -19

Reorder the terms:
19 + -19 + -10w + w2 = 0 + -19

Combine like terms: 19 + -19 = 0
0 + -10w + w2 = 0 + -19
-10w + w2 = 0 + -19

Combine like terms: 0 + -19 = -19
-10w + w2 = -19

The w term is -10w.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10w + 25 + w2 = -19 + 25

Reorder the terms:
25 + -10w + w2 = -19 + 25

Combine like terms: -19 + 25 = 6
25 + -10w + w2 = 6

Factor a perfect square on the left side:
(w + -5)(w + -5) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(w + -5) equal to 2.449489743 and -2.449489743.

Subproblem 1

w + -5 = 2.449489743 Simplifying w + -5 = 2.449489743 Reorder the terms: -5 + w = 2.449489743 Solving -5 + w = 2.449489743 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + w = 2.449489743 + 5 Combine like terms: -5 + 5 = 0 0 + w = 2.449489743 + 5 w = 2.449489743 + 5 Combine like terms: 2.449489743 + 5 = 7.449489743 w = 7.449489743 Simplifying w = 7.449489743

Subproblem 2

w + -5 = -2.449489743 Simplifying w + -5 = -2.449489743 Reorder the terms: -5 + w = -2.449489743 Solving -5 + w = -2.449489743 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + w = -2.449489743 + 5 Combine like terms: -5 + 5 = 0 0 + w = -2.449489743 + 5 w = -2.449489743 + 5 Combine like terms: -2.449489743 + 5 = 2.550510257 w = 2.550510257 Simplifying w = 2.550510257

Solution

The solution to the problem is based on the solutions from the subproblems. w = {7.449489743, 2.550510257}

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