-17w+40=8w^2+5

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Solution for -17w+40=8w^2+5 equation:


Simplifying
-17w + 40 = 8w2 + 5

Reorder the terms:
40 + -17w = 8w2 + 5

Reorder the terms:
40 + -17w = 5 + 8w2

Solving
40 + -17w = 5 + 8w2

Solving for variable 'w'.

Reorder the terms:
40 + -5 + -17w + -8w2 = 5 + 8w2 + -5 + -8w2

Combine like terms: 40 + -5 = 35
35 + -17w + -8w2 = 5 + 8w2 + -5 + -8w2

Reorder the terms:
35 + -17w + -8w2 = 5 + -5 + 8w2 + -8w2

Combine like terms: 5 + -5 = 0
35 + -17w + -8w2 = 0 + 8w2 + -8w2
35 + -17w + -8w2 = 8w2 + -8w2

Combine like terms: 8w2 + -8w2 = 0
35 + -17w + -8w2 = 0

Begin completing the square.  Divide all terms by
-8 the coefficient of the squared term: 

Divide each side by '-8'.
-4.375 + 2.125w + w2 = 0

Move the constant term to the right:

Add '4.375' to each side of the equation.
-4.375 + 2.125w + 4.375 + w2 = 0 + 4.375

Reorder the terms:
-4.375 + 4.375 + 2.125w + w2 = 0 + 4.375

Combine like terms: -4.375 + 4.375 = 0.000
0.000 + 2.125w + w2 = 0 + 4.375
2.125w + w2 = 0 + 4.375

Combine like terms: 0 + 4.375 = 4.375
2.125w + w2 = 4.375

The w term is 2.125w.  Take half its coefficient (1.0625).
Square it (1.12890625) and add it to both sides.

Add '1.12890625' to each side of the equation.
2.125w + 1.12890625 + w2 = 4.375 + 1.12890625

Reorder the terms:
1.12890625 + 2.125w + w2 = 4.375 + 1.12890625

Combine like terms: 4.375 + 1.12890625 = 5.50390625
1.12890625 + 2.125w + w2 = 5.50390625

Factor a perfect square on the left side:
(w + 1.0625)(w + 1.0625) = 5.50390625

Calculate the square root of the right side: 2.346040547

Break this problem into two subproblems by setting 
(w + 1.0625) equal to 2.346040547 and -2.346040547.

Subproblem 1

w + 1.0625 = 2.346040547 Simplifying w + 1.0625 = 2.346040547 Reorder the terms: 1.0625 + w = 2.346040547 Solving 1.0625 + w = 2.346040547 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-1.0625' to each side of the equation. 1.0625 + -1.0625 + w = 2.346040547 + -1.0625 Combine like terms: 1.0625 + -1.0625 = 0.0000 0.0000 + w = 2.346040547 + -1.0625 w = 2.346040547 + -1.0625 Combine like terms: 2.346040547 + -1.0625 = 1.283540547 w = 1.283540547 Simplifying w = 1.283540547

Subproblem 2

w + 1.0625 = -2.346040547 Simplifying w + 1.0625 = -2.346040547 Reorder the terms: 1.0625 + w = -2.346040547 Solving 1.0625 + w = -2.346040547 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-1.0625' to each side of the equation. 1.0625 + -1.0625 + w = -2.346040547 + -1.0625 Combine like terms: 1.0625 + -1.0625 = 0.0000 0.0000 + w = -2.346040547 + -1.0625 w = -2.346040547 + -1.0625 Combine like terms: -2.346040547 + -1.0625 = -3.408540547 w = -3.408540547 Simplifying w = -3.408540547

Solution

The solution to the problem is based on the solutions from the subproblems. w = {1.283540547, -3.408540547}

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