9w^2-2w-57=0

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Solution for 9w^2-2w-57=0 equation:


Simplifying
9w2 + -2w + -57 = 0

Reorder the terms:
-57 + -2w + 9w2 = 0

Solving
-57 + -2w + 9w2 = 0

Solving for variable 'w'.

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

Divide each side by '9'.
-6.333333333 + -0.2222222222w + w2 = 0

Move the constant term to the right:

Add '6.333333333' to each side of the equation.
-6.333333333 + -0.2222222222w + 6.333333333 + w2 = 0 + 6.333333333

Reorder the terms:
-6.333333333 + 6.333333333 + -0.2222222222w + w2 = 0 + 6.333333333

Combine like terms: -6.333333333 + 6.333333333 = 0.000000000
0.000000000 + -0.2222222222w + w2 = 0 + 6.333333333
-0.2222222222w + w2 = 0 + 6.333333333

Combine like terms: 0 + 6.333333333 = 6.333333333
-0.2222222222w + w2 = 6.333333333

The w term is -0.2222222222w.  Take half its coefficient (-0.1111111111).
Square it (0.01234567901) and add it to both sides.

Add '0.01234567901' to each side of the equation.
-0.2222222222w + 0.01234567901 + w2 = 6.333333333 + 0.01234567901

Reorder the terms:
0.01234567901 + -0.2222222222w + w2 = 6.333333333 + 0.01234567901

Combine like terms: 6.333333333 + 0.01234567901 = 6.34567901201
0.01234567901 + -0.2222222222w + w2 = 6.34567901201

Factor a perfect square on the left side:
(w + -0.1111111111)(w + -0.1111111111) = 6.34567901201

Calculate the square root of the right side: 2.519063122

Break this problem into two subproblems by setting 
(w + -0.1111111111) equal to 2.519063122 and -2.519063122.

Subproblem 1

w + -0.1111111111 = 2.519063122 Simplifying w + -0.1111111111 = 2.519063122 Reorder the terms: -0.1111111111 + w = 2.519063122 Solving -0.1111111111 + w = 2.519063122 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.1111111111' to each side of the equation. -0.1111111111 + 0.1111111111 + w = 2.519063122 + 0.1111111111 Combine like terms: -0.1111111111 + 0.1111111111 = 0.0000000000 0.0000000000 + w = 2.519063122 + 0.1111111111 w = 2.519063122 + 0.1111111111 Combine like terms: 2.519063122 + 0.1111111111 = 2.6301742331 w = 2.6301742331 Simplifying w = 2.6301742331

Subproblem 2

w + -0.1111111111 = -2.519063122 Simplifying w + -0.1111111111 = -2.519063122 Reorder the terms: -0.1111111111 + w = -2.519063122 Solving -0.1111111111 + w = -2.519063122 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.1111111111' to each side of the equation. -0.1111111111 + 0.1111111111 + w = -2.519063122 + 0.1111111111 Combine like terms: -0.1111111111 + 0.1111111111 = 0.0000000000 0.0000000000 + w = -2.519063122 + 0.1111111111 w = -2.519063122 + 0.1111111111 Combine like terms: -2.519063122 + 0.1111111111 = -2.4079520109 w = -2.4079520109 Simplifying w = -2.4079520109

Solution

The solution to the problem is based on the solutions from the subproblems. w = {2.6301742331, -2.4079520109}

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