64x^2-69x-2=0

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Solution for 64x^2-69x-2=0 equation:


Simplifying
64x2 + -69x + -2 = 0

Reorder the terms:
-2 + -69x + 64x2 = 0

Solving
-2 + -69x + 64x2 = 0

Solving for variable 'x'.

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

Divide each side by '64'.
-0.03125 + -1.078125x + x2 = 0

Move the constant term to the right:

Add '0.03125' to each side of the equation.
-0.03125 + -1.078125x + 0.03125 + x2 = 0 + 0.03125

Reorder the terms:
-0.03125 + 0.03125 + -1.078125x + x2 = 0 + 0.03125

Combine like terms: -0.03125 + 0.03125 = 0.00000
0.00000 + -1.078125x + x2 = 0 + 0.03125
-1.078125x + x2 = 0 + 0.03125

Combine like terms: 0 + 0.03125 = 0.03125
-1.078125x + x2 = 0.03125

The x term is -1.078125x.  Take half its coefficient (-0.5390625).
Square it (0.2905883789) and add it to both sides.

Add '0.2905883789' to each side of the equation.
-1.078125x + 0.2905883789 + x2 = 0.03125 + 0.2905883789

Reorder the terms:
0.2905883789 + -1.078125x + x2 = 0.03125 + 0.2905883789

Combine like terms: 0.03125 + 0.2905883789 = 0.3218383789
0.2905883789 + -1.078125x + x2 = 0.3218383789

Factor a perfect square on the left side:
(x + -0.5390625)(x + -0.5390625) = 0.3218383789

Calculate the square root of the right side: 0.567308011

Break this problem into two subproblems by setting 
(x + -0.5390625) equal to 0.567308011 and -0.567308011.

Subproblem 1

x + -0.5390625 = 0.567308011 Simplifying x + -0.5390625 = 0.567308011 Reorder the terms: -0.5390625 + x = 0.567308011 Solving -0.5390625 + x = 0.567308011 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5390625' to each side of the equation. -0.5390625 + 0.5390625 + x = 0.567308011 + 0.5390625 Combine like terms: -0.5390625 + 0.5390625 = 0.0000000 0.0000000 + x = 0.567308011 + 0.5390625 x = 0.567308011 + 0.5390625 Combine like terms: 0.567308011 + 0.5390625 = 1.106370511 x = 1.106370511 Simplifying x = 1.106370511

Subproblem 2

x + -0.5390625 = -0.567308011 Simplifying x + -0.5390625 = -0.567308011 Reorder the terms: -0.5390625 + x = -0.567308011 Solving -0.5390625 + x = -0.567308011 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5390625' to each side of the equation. -0.5390625 + 0.5390625 + x = -0.567308011 + 0.5390625 Combine like terms: -0.5390625 + 0.5390625 = 0.0000000 0.0000000 + x = -0.567308011 + 0.5390625 x = -0.567308011 + 0.5390625 Combine like terms: -0.567308011 + 0.5390625 = -0.028245511 x = -0.028245511 Simplifying x = -0.028245511

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.106370511, -0.028245511}

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