(w+10)(w+10)-45=0

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Solution for (w+10)(w+10)-45=0 equation:


Simplifying
(w + 10)(w + 10) + -45 = 0

Reorder the terms:
(10 + w)(w + 10) + -45 = 0

Reorder the terms:
(10 + w)(10 + w) + -45 = 0

Multiply (10 + w) * (10 + w)
(10(10 + w) + w(10 + w)) + -45 = 0
((10 * 10 + w * 10) + w(10 + w)) + -45 = 0
((100 + 10w) + w(10 + w)) + -45 = 0
(100 + 10w + (10 * w + w * w)) + -45 = 0
(100 + 10w + (10w + w2)) + -45 = 0

Combine like terms: 10w + 10w = 20w
(100 + 20w + w2) + -45 = 0

Reorder the terms:
100 + -45 + 20w + w2 = 0

Combine like terms: 100 + -45 = 55
55 + 20w + w2 = 0

Solving
55 + 20w + w2 = 0

Solving for variable 'w'.

Begin completing the square.

Move the constant term to the right:

Add '-55' to each side of the equation.
55 + 20w + -55 + w2 = 0 + -55

Reorder the terms:
55 + -55 + 20w + w2 = 0 + -55

Combine like terms: 55 + -55 = 0
0 + 20w + w2 = 0 + -55
20w + w2 = 0 + -55

Combine like terms: 0 + -55 = -55
20w + w2 = -55

The w term is 20w.  Take half its coefficient (10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
20w + 100 + w2 = -55 + 100

Reorder the terms:
100 + 20w + w2 = -55 + 100

Combine like terms: -55 + 100 = 45
100 + 20w + w2 = 45

Factor a perfect square on the left side:
(w + 10)(w + 10) = 45

Calculate the square root of the right side: 6.708203933

Break this problem into two subproblems by setting 
(w + 10) equal to 6.708203933 and -6.708203933.

Subproblem 1

w + 10 = 6.708203933 Simplifying w + 10 = 6.708203933 Reorder the terms: 10 + w = 6.708203933 Solving 10 + w = 6.708203933 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + w = 6.708203933 + -10 Combine like terms: 10 + -10 = 0 0 + w = 6.708203933 + -10 w = 6.708203933 + -10 Combine like terms: 6.708203933 + -10 = -3.291796067 w = -3.291796067 Simplifying w = -3.291796067

Subproblem 2

w + 10 = -6.708203933 Simplifying w + 10 = -6.708203933 Reorder the terms: 10 + w = -6.708203933 Solving 10 + w = -6.708203933 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + w = -6.708203933 + -10 Combine like terms: 10 + -10 = 0 0 + w = -6.708203933 + -10 w = -6.708203933 + -10 Combine like terms: -6.708203933 + -10 = -16.708203933 w = -16.708203933 Simplifying w = -16.708203933

Solution

The solution to the problem is based on the solutions from the subproblems. w = {-3.291796067, -16.708203933}

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