(2x-4)(2x-4)=13

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Solution for (2x-4)(2x-4)=13 equation:


Simplifying
(2x + -4)(2x + -4) = 13

Reorder the terms:
(-4 + 2x)(2x + -4) = 13

Reorder the terms:
(-4 + 2x)(-4 + 2x) = 13

Multiply (-4 + 2x) * (-4 + 2x)
(-4(-4 + 2x) + 2x * (-4 + 2x)) = 13
((-4 * -4 + 2x * -4) + 2x * (-4 + 2x)) = 13
((16 + -8x) + 2x * (-4 + 2x)) = 13
(16 + -8x + (-4 * 2x + 2x * 2x)) = 13
(16 + -8x + (-8x + 4x2)) = 13

Combine like terms: -8x + -8x = -16x
(16 + -16x + 4x2) = 13

Solving
16 + -16x + 4x2 = 13

Solving for variable 'x'.

Reorder the terms:
16 + -13 + -16x + 4x2 = 13 + -13

Combine like terms: 16 + -13 = 3
3 + -16x + 4x2 = 13 + -13

Combine like terms: 13 + -13 = 0
3 + -16x + 4x2 = 0

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

Divide each side by '4'.
0.75 + -4x + x2 = 0

Move the constant term to the right:

Add '-0.75' to each side of the equation.
0.75 + -4x + -0.75 + x2 = 0 + -0.75

Reorder the terms:
0.75 + -0.75 + -4x + x2 = 0 + -0.75

Combine like terms: 0.75 + -0.75 = 0.00
0.00 + -4x + x2 = 0 + -0.75
-4x + x2 = 0 + -0.75

Combine like terms: 0 + -0.75 = -0.75
-4x + x2 = -0.75

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = -0.75 + 4

Reorder the terms:
4 + -4x + x2 = -0.75 + 4

Combine like terms: -0.75 + 4 = 3.25
4 + -4x + x2 = 3.25

Factor a perfect square on the left side:
(x + -2)(x + -2) = 3.25

Calculate the square root of the right side: 1.802775638

Break this problem into two subproblems by setting 
(x + -2) equal to 1.802775638 and -1.802775638.

Subproblem 1

x + -2 = 1.802775638 Simplifying x + -2 = 1.802775638 Reorder the terms: -2 + x = 1.802775638 Solving -2 + x = 1.802775638 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 1.802775638 + 2 Combine like terms: -2 + 2 = 0 0 + x = 1.802775638 + 2 x = 1.802775638 + 2 Combine like terms: 1.802775638 + 2 = 3.802775638 x = 3.802775638 Simplifying x = 3.802775638

Subproblem 2

x + -2 = -1.802775638 Simplifying x + -2 = -1.802775638 Reorder the terms: -2 + x = -1.802775638 Solving -2 + x = -1.802775638 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -1.802775638 + 2 Combine like terms: -2 + 2 = 0 0 + x = -1.802775638 + 2 x = -1.802775638 + 2 Combine like terms: -1.802775638 + 2 = 0.197224362 x = 0.197224362 Simplifying x = 0.197224362

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.802775638, 0.197224362}

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