(x+4)*2-(4x^2-4x+1)=8x

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Solution for (x+4)*2-(4x^2-4x+1)=8x equation:


Simplifying
(x + 4) * 2 + -1(4x2 + -4x + 1) = 8x

Reorder the terms:
(4 + x) * 2 + -1(4x2 + -4x + 1) = 8x

Reorder the terms for easier multiplication:
2(4 + x) + -1(4x2 + -4x + 1) = 8x
(4 * 2 + x * 2) + -1(4x2 + -4x + 1) = 8x
(8 + 2x) + -1(4x2 + -4x + 1) = 8x

Reorder the terms:
8 + 2x + -1(1 + -4x + 4x2) = 8x
8 + 2x + (1 * -1 + -4x * -1 + 4x2 * -1) = 8x
8 + 2x + (-1 + 4x + -4x2) = 8x

Reorder the terms:
8 + -1 + 2x + 4x + -4x2 = 8x

Combine like terms: 8 + -1 = 7
7 + 2x + 4x + -4x2 = 8x

Combine like terms: 2x + 4x = 6x
7 + 6x + -4x2 = 8x

Solving
7 + 6x + -4x2 = 8x

Solving for variable 'x'.

Reorder the terms:
7 + 6x + -8x + -4x2 = 8x + -8x

Combine like terms: 6x + -8x = -2x
7 + -2x + -4x2 = 8x + -8x

Combine like terms: 8x + -8x = 0
7 + -2x + -4x2 = 0

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
-1.75 + 0.5x + x2 = 0

Move the constant term to the right:

Add '1.75' to each side of the equation.
-1.75 + 0.5x + 1.75 + x2 = 0 + 1.75

Reorder the terms:
-1.75 + 1.75 + 0.5x + x2 = 0 + 1.75

Combine like terms: -1.75 + 1.75 = 0.00
0.00 + 0.5x + x2 = 0 + 1.75
0.5x + x2 = 0 + 1.75

Combine like terms: 0 + 1.75 = 1.75
0.5x + x2 = 1.75

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 = 1.75 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = 1.75 + 0.0625

Combine like terms: 1.75 + 0.0625 = 1.8125
0.0625 + 0.5x + x2 = 1.8125

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = 1.8125

Calculate the square root of the right side: 1.346291202

Break this problem into two subproblems by setting 
(x + 0.25) equal to 1.346291202 and -1.346291202.

Subproblem 1

x + 0.25 = 1.346291202 Simplifying x + 0.25 = 1.346291202 Reorder the terms: 0.25 + x = 1.346291202 Solving 0.25 + x = 1.346291202 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 = 1.346291202 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = 1.346291202 + -0.25 x = 1.346291202 + -0.25 Combine like terms: 1.346291202 + -0.25 = 1.096291202 x = 1.096291202 Simplifying x = 1.096291202

Subproblem 2

x + 0.25 = -1.346291202 Simplifying x + 0.25 = -1.346291202 Reorder the terms: 0.25 + x = -1.346291202 Solving 0.25 + x = -1.346291202 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 = -1.346291202 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = -1.346291202 + -0.25 x = -1.346291202 + -0.25 Combine like terms: -1.346291202 + -0.25 = -1.596291202 x = -1.596291202 Simplifying x = -1.596291202

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.096291202, -1.596291202}

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