6w^2-9w-65=0

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Solution for 6w^2-9w-65=0 equation:


Simplifying
6w2 + -9w + -65 = 0

Reorder the terms:
-65 + -9w + 6w2 = 0

Solving
-65 + -9w + 6w2 = 0

Solving for variable 'w'.

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

Divide each side by '6'.
-10.83333333 + -1.5w + w2 = 0

Move the constant term to the right:

Add '10.83333333' to each side of the equation.
-10.83333333 + -1.5w + 10.83333333 + w2 = 0 + 10.83333333

Reorder the terms:
-10.83333333 + 10.83333333 + -1.5w + w2 = 0 + 10.83333333

Combine like terms: -10.83333333 + 10.83333333 = 0.00000000
0.00000000 + -1.5w + w2 = 0 + 10.83333333
-1.5w + w2 = 0 + 10.83333333

Combine like terms: 0 + 10.83333333 = 10.83333333
-1.5w + w2 = 10.83333333

The w term is -1.5w.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5w + 0.5625 + w2 = 10.83333333 + 0.5625

Reorder the terms:
0.5625 + -1.5w + w2 = 10.83333333 + 0.5625

Combine like terms: 10.83333333 + 0.5625 = 11.39583333
0.5625 + -1.5w + w2 = 11.39583333

Factor a perfect square on the left side:
(w + -0.75)(w + -0.75) = 11.39583333

Calculate the square root of the right side: 3.375771516

Break this problem into two subproblems by setting 
(w + -0.75) equal to 3.375771516 and -3.375771516.

Subproblem 1

w + -0.75 = 3.375771516 Simplifying w + -0.75 = 3.375771516 Reorder the terms: -0.75 + w = 3.375771516 Solving -0.75 + w = 3.375771516 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + w = 3.375771516 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + w = 3.375771516 + 0.75 w = 3.375771516 + 0.75 Combine like terms: 3.375771516 + 0.75 = 4.125771516 w = 4.125771516 Simplifying w = 4.125771516

Subproblem 2

w + -0.75 = -3.375771516 Simplifying w + -0.75 = -3.375771516 Reorder the terms: -0.75 + w = -3.375771516 Solving -0.75 + w = -3.375771516 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + w = -3.375771516 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + w = -3.375771516 + 0.75 w = -3.375771516 + 0.75 Combine like terms: -3.375771516 + 0.75 = -2.625771516 w = -2.625771516 Simplifying w = -2.625771516

Solution

The solution to the problem is based on the solutions from the subproblems. w = {4.125771516, -2.625771516}

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