8x=16x^2-25

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Solution for 8x=16x^2-25 equation:


Simplifying
8x = 16x2 + -25

Reorder the terms:
8x = -25 + 16x2

Solving
8x = -25 + 16x2

Solving for variable 'x'.

Reorder the terms:
25 + 8x + -16x2 = -25 + 16x2 + 25 + -16x2

Reorder the terms:
25 + 8x + -16x2 = -25 + 25 + 16x2 + -16x2

Combine like terms: -25 + 25 = 0
25 + 8x + -16x2 = 0 + 16x2 + -16x2
25 + 8x + -16x2 = 16x2 + -16x2

Combine like terms: 16x2 + -16x2 = 0
25 + 8x + -16x2 = 0

Begin completing the square.  Divide all terms by
-16 the coefficient of the squared term: 

Divide each side by '-16'.
-1.5625 + -0.5x + x2 = 0

Move the constant term to the right:

Add '1.5625' to each side of the equation.
-1.5625 + -0.5x + 1.5625 + x2 = 0 + 1.5625

Reorder the terms:
-1.5625 + 1.5625 + -0.5x + x2 = 0 + 1.5625

Combine like terms: -1.5625 + 1.5625 = 0.0000
0.0000 + -0.5x + x2 = 0 + 1.5625
-0.5x + x2 = 0 + 1.5625

Combine like terms: 0 + 1.5625 = 1.5625
-0.5x + x2 = 1.5625

The x term is -0.5x.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5x + 0.0625 + x2 = 1.5625 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = 1.5625 + 0.0625

Combine like terms: 1.5625 + 0.0625 = 1.625
0.0625 + -0.5x + x2 = 1.625

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = 1.625

Calculate the square root of the right side: 1.274754878

Break this problem into two subproblems by setting 
(x + -0.25) equal to 1.274754878 and -1.274754878.

Subproblem 1

x + -0.25 = 1.274754878 Simplifying x + -0.25 = 1.274754878 Reorder the terms: -0.25 + x = 1.274754878 Solving -0.25 + x = 1.274754878 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = 1.274754878 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 1.274754878 + 0.25 x = 1.274754878 + 0.25 Combine like terms: 1.274754878 + 0.25 = 1.524754878 x = 1.524754878 Simplifying x = 1.524754878

Subproblem 2

x + -0.25 = -1.274754878 Simplifying x + -0.25 = -1.274754878 Reorder the terms: -0.25 + x = -1.274754878 Solving -0.25 + x = -1.274754878 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = -1.274754878 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -1.274754878 + 0.25 x = -1.274754878 + 0.25 Combine like terms: -1.274754878 + 0.25 = -1.024754878 x = -1.024754878 Simplifying x = -1.024754878

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.524754878, -1.024754878}

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