64x^2+36x-25=0

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Solution for 64x^2+36x-25=0 equation:


Simplifying
64x2 + 36x + -25 = 0

Reorder the terms:
-25 + 36x + 64x2 = 0

Solving
-25 + 36x + 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'.
-0.390625 + 0.5625x + x2 = 0

Move the constant term to the right:

Add '0.390625' to each side of the equation.
-0.390625 + 0.5625x + 0.390625 + x2 = 0 + 0.390625

Reorder the terms:
-0.390625 + 0.390625 + 0.5625x + x2 = 0 + 0.390625

Combine like terms: -0.390625 + 0.390625 = 0.000000
0.000000 + 0.5625x + x2 = 0 + 0.390625
0.5625x + x2 = 0 + 0.390625

Combine like terms: 0 + 0.390625 = 0.390625
0.5625x + x2 = 0.390625

The x term is 0.5625x.  Take half its coefficient (0.28125).
Square it (0.0791015625) and add it to both sides.

Add '0.0791015625' to each side of the equation.
0.5625x + 0.0791015625 + x2 = 0.390625 + 0.0791015625

Reorder the terms:
0.0791015625 + 0.5625x + x2 = 0.390625 + 0.0791015625

Combine like terms: 0.390625 + 0.0791015625 = 0.4697265625
0.0791015625 + 0.5625x + x2 = 0.4697265625

Factor a perfect square on the left side:
(x + 0.28125)(x + 0.28125) = 0.4697265625

Calculate the square root of the right side: 0.685366006

Break this problem into two subproblems by setting 
(x + 0.28125) equal to 0.685366006 and -0.685366006.

Subproblem 1

x + 0.28125 = 0.685366006 Simplifying x + 0.28125 = 0.685366006 Reorder the terms: 0.28125 + x = 0.685366006 Solving 0.28125 + x = 0.685366006 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.28125' to each side of the equation. 0.28125 + -0.28125 + x = 0.685366006 + -0.28125 Combine like terms: 0.28125 + -0.28125 = 0.00000 0.00000 + x = 0.685366006 + -0.28125 x = 0.685366006 + -0.28125 Combine like terms: 0.685366006 + -0.28125 = 0.404116006 x = 0.404116006 Simplifying x = 0.404116006

Subproblem 2

x + 0.28125 = -0.685366006 Simplifying x + 0.28125 = -0.685366006 Reorder the terms: 0.28125 + x = -0.685366006 Solving 0.28125 + x = -0.685366006 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.28125' to each side of the equation. 0.28125 + -0.28125 + x = -0.685366006 + -0.28125 Combine like terms: 0.28125 + -0.28125 = 0.00000 0.00000 + x = -0.685366006 + -0.28125 x = -0.685366006 + -0.28125 Combine like terms: -0.685366006 + -0.28125 = -0.966616006 x = -0.966616006 Simplifying x = -0.966616006

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.404116006, -0.966616006}

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