2(2x-0.1)2x=28.6

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Solution for 2(2x-0.1)2x=28.6 equation:


Simplifying
2(2x + -0.1) * 2x = 28.6

Reorder the terms:
2(-0.1 + 2x) * 2x = 28.6

Reorder the terms for easier multiplication:
2 * 2x(-0.1 + 2x) = 28.6

Multiply 2 * 2
4x(-0.1 + 2x) = 28.6
(-0.1 * 4x + 2x * 4x) = 28.6
(-0.4x + 8x2) = 28.6

Solving
-0.4x + 8x2 = 28.6

Solving for variable 'x'.

Reorder the terms:
-28.6 + -0.4x + 8x2 = 28.6 + -28.6

Combine like terms: 28.6 + -28.6 = 0.0
-28.6 + -0.4x + 8x2 = 0.0

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

Divide each side by '8'.
-3.575 + -0.05x + x2 = 0.0

Move the constant term to the right:

Add '3.575' to each side of the equation.
-3.575 + -0.05x + 3.575 + x2 = 0.0 + 3.575

Reorder the terms:
-3.575 + 3.575 + -0.05x + x2 = 0.0 + 3.575

Combine like terms: -3.575 + 3.575 = 0.000
0.000 + -0.05x + x2 = 0.0 + 3.575
-0.05x + x2 = 0.0 + 3.575

Combine like terms: 0.0 + 3.575 = 3.575
-0.05x + x2 = 3.575

The x term is -0.05x.  Take half its coefficient (-0.025).
Square it (0.000625) and add it to both sides.

Add '0.000625' to each side of the equation.
-0.05x + 0.000625 + x2 = 3.575 + 0.000625

Reorder the terms:
0.000625 + -0.05x + x2 = 3.575 + 0.000625

Combine like terms: 3.575 + 0.000625 = 3.575625
0.000625 + -0.05x + x2 = 3.575625

Factor a perfect square on the left side:
(x + -0.025)(x + -0.025) = 3.575625

Calculate the square root of the right side: 1.89093231

Break this problem into two subproblems by setting 
(x + -0.025) equal to 1.89093231 and -1.89093231.

Subproblem 1

x + -0.025 = 1.89093231 Simplifying x + -0.025 = 1.89093231 Reorder the terms: -0.025 + x = 1.89093231 Solving -0.025 + x = 1.89093231 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.025' to each side of the equation. -0.025 + 0.025 + x = 1.89093231 + 0.025 Combine like terms: -0.025 + 0.025 = 0.000 0.000 + x = 1.89093231 + 0.025 x = 1.89093231 + 0.025 Combine like terms: 1.89093231 + 0.025 = 1.91593231 x = 1.91593231 Simplifying x = 1.91593231

Subproblem 2

x + -0.025 = -1.89093231 Simplifying x + -0.025 = -1.89093231 Reorder the terms: -0.025 + x = -1.89093231 Solving -0.025 + x = -1.89093231 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.025' to each side of the equation. -0.025 + 0.025 + x = -1.89093231 + 0.025 Combine like terms: -0.025 + 0.025 = 0.000 0.000 + x = -1.89093231 + 0.025 x = -1.89093231 + 0.025 Combine like terms: -1.89093231 + 0.025 = -1.86593231 x = -1.86593231 Simplifying x = -1.86593231

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.91593231, -1.86593231}

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