64x^2-48x=39

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Solution for 64x^2-48x=39 equation:


Simplifying
64x2 + -48x = 39

Reorder the terms:
-48x + 64x2 = 39

Solving
-48x + 64x2 = 39

Solving for variable 'x'.

Reorder the terms:
-39 + -48x + 64x2 = 39 + -39

Combine like terms: 39 + -39 = 0
-39 + -48x + 64x2 = 0

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

Divide each side by '64'.
-0.609375 + -0.75x + x2 = 0

Move the constant term to the right:

Add '0.609375' to each side of the equation.
-0.609375 + -0.75x + 0.609375 + x2 = 0 + 0.609375

Reorder the terms:
-0.609375 + 0.609375 + -0.75x + x2 = 0 + 0.609375

Combine like terms: -0.609375 + 0.609375 = 0.000000
0.000000 + -0.75x + x2 = 0 + 0.609375
-0.75x + x2 = 0 + 0.609375

Combine like terms: 0 + 0.609375 = 0.609375
-0.75x + x2 = 0.609375

The x term is -0.75x.  Take half its coefficient (-0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
-0.75x + 0.140625 + x2 = 0.609375 + 0.140625

Reorder the terms:
0.140625 + -0.75x + x2 = 0.609375 + 0.140625

Combine like terms: 0.609375 + 0.140625 = 0.75
0.140625 + -0.75x + x2 = 0.75

Factor a perfect square on the left side:
(x + -0.375)(x + -0.375) = 0.75

Calculate the square root of the right side: 0.866025404

Break this problem into two subproblems by setting 
(x + -0.375) equal to 0.866025404 and -0.866025404.

Subproblem 1

x + -0.375 = 0.866025404 Simplifying x + -0.375 = 0.866025404 Reorder the terms: -0.375 + x = 0.866025404 Solving -0.375 + x = 0.866025404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x = 0.866025404 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = 0.866025404 + 0.375 x = 0.866025404 + 0.375 Combine like terms: 0.866025404 + 0.375 = 1.241025404 x = 1.241025404 Simplifying x = 1.241025404

Subproblem 2

x + -0.375 = -0.866025404 Simplifying x + -0.375 = -0.866025404 Reorder the terms: -0.375 + x = -0.866025404 Solving -0.375 + x = -0.866025404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x = -0.866025404 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = -0.866025404 + 0.375 x = -0.866025404 + 0.375 Combine like terms: -0.866025404 + 0.375 = -0.491025404 x = -0.491025404 Simplifying x = -0.491025404

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.241025404, -0.491025404}

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