8w^2+14w-17=0

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Solution for 8w^2+14w-17=0 equation:


Simplifying
8w2 + 14w + -17 = 0

Reorder the terms:
-17 + 14w + 8w2 = 0

Solving
-17 + 14w + 8w2 = 0

Solving for variable 'w'.

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

Divide each side by '8'.
-2.125 + 1.75w + w2 = 0

Move the constant term to the right:

Add '2.125' to each side of the equation.
-2.125 + 1.75w + 2.125 + w2 = 0 + 2.125

Reorder the terms:
-2.125 + 2.125 + 1.75w + w2 = 0 + 2.125

Combine like terms: -2.125 + 2.125 = 0.000
0.000 + 1.75w + w2 = 0 + 2.125
1.75w + w2 = 0 + 2.125

Combine like terms: 0 + 2.125 = 2.125
1.75w + w2 = 2.125

The w term is 1.75w.  Take half its coefficient (0.875).
Square it (0.765625) and add it to both sides.

Add '0.765625' to each side of the equation.
1.75w + 0.765625 + w2 = 2.125 + 0.765625

Reorder the terms:
0.765625 + 1.75w + w2 = 2.125 + 0.765625

Combine like terms: 2.125 + 0.765625 = 2.890625
0.765625 + 1.75w + w2 = 2.890625

Factor a perfect square on the left side:
(w + 0.875)(w + 0.875) = 2.890625

Calculate the square root of the right side: 1.700183814

Break this problem into two subproblems by setting 
(w + 0.875) equal to 1.700183814 and -1.700183814.

Subproblem 1

w + 0.875 = 1.700183814 Simplifying w + 0.875 = 1.700183814 Reorder the terms: 0.875 + w = 1.700183814 Solving 0.875 + w = 1.700183814 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-0.875' to each side of the equation. 0.875 + -0.875 + w = 1.700183814 + -0.875 Combine like terms: 0.875 + -0.875 = 0.000 0.000 + w = 1.700183814 + -0.875 w = 1.700183814 + -0.875 Combine like terms: 1.700183814 + -0.875 = 0.825183814 w = 0.825183814 Simplifying w = 0.825183814

Subproblem 2

w + 0.875 = -1.700183814 Simplifying w + 0.875 = -1.700183814 Reorder the terms: 0.875 + w = -1.700183814 Solving 0.875 + w = -1.700183814 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-0.875' to each side of the equation. 0.875 + -0.875 + w = -1.700183814 + -0.875 Combine like terms: 0.875 + -0.875 = 0.000 0.000 + w = -1.700183814 + -0.875 w = -1.700183814 + -0.875 Combine like terms: -1.700183814 + -0.875 = -2.575183814 w = -2.575183814 Simplifying w = -2.575183814

Solution

The solution to the problem is based on the solutions from the subproblems. w = {0.825183814, -2.575183814}

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