(x-3)(x-1)=4

Solution for (x-3)(x-1)=4 equation:

Simplifying
(x + -3)(x + -1) = 4

Reorder the terms:
(-3 + x)(x + -1) = 4

Reorder the terms:
(-3 + x)(-1 + x) = 4

Multiply (-3 + x) * (-1 + x)
(-3(-1 + x) + x(-1 + x)) = 4
((-1 * -3 + x * -3) + x(-1 + x)) = 4
((3 + -3x) + x(-1 + x)) = 4
(3 + -3x + (-1 * x + x * x)) = 4
(3 + -3x + (-1x + x2)) = 4

Combine like terms: -3x + -1x = -4x
(3 + -4x + x2) = 4

Solving
3 + -4x + x2 = 4

Solving for variable 'x'.

Reorder the terms:
3 + -4 + -4x + x2 = 4 + -4

Combine like terms: 3 + -4 = -1
-1 + -4x + x2 = 4 + -4

Combine like terms: 4 + -4 = 0
-1 + -4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -4x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + -4x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -4x + x2 = 0 + 1
-4x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
-4x + x2 = 1

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 = 1 + 4

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

Combine like terms: 1 + 4 = 5
4 + -4x + x2 = 5

Factor a perfect square on the left side:
(x + -2)(x + -2) = 5

Calculate the square root of the right side: 2.236067978

Break this problem into two subproblems by setting 
(x + -2) equal to 2.236067978 and -2.236067978.

Subproblem 1
x + -2 = 2.236067978

Simplifying
x + -2 = 2.236067978

Reorder the terms:
-2 + x = 2.236067978

Solving
-2 + x = 2.236067978

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 = 2.236067978 + 2

Combine like terms: -2 + 2 = 0
0 + x = 2.236067978 + 2
x = 2.236067978 + 2

Combine like terms: 2.236067978 + 2 = 4.236067978
x = 4.236067978

Simplifying
x = 4.236067978

Subproblem 2
x + -2 = -2.236067978

Simplifying
x + -2 = -2.236067978

Reorder the terms:
-2 + x = -2.236067978

Solving
-2 + x = -2.236067978

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 = -2.236067978 + 2

Combine like terms: -2 + 2 = 0
0 + x = -2.236067978 + 2
x = -2.236067978 + 2

Combine like terms: -2.236067978 + 2 = -0.236067978
x = -0.236067978

Simplifying
x = -0.236067978

Solution
The solution to the problem is based on the solutions
from the subproblems.
x = {4.236067978, -0.236067978}