x^2-4x+2=46

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Solution for x^2-4x+2=46 equation:


Simplifying
x2 + -4x + 2 = 46

Reorder the terms:
2 + -4x + x2 = 46

Solving
2 + -4x + x2 = 46

Solving for variable 'x'.

Reorder the terms:
2 + -46 + -4x + x2 = 46 + -46

Combine like terms: 2 + -46 = -44
-44 + -4x + x2 = 46 + -46

Combine like terms: 46 + -46 = 0
-44 + -4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '44' to each side of the equation.
-44 + -4x + 44 + x2 = 0 + 44

Reorder the terms:
-44 + 44 + -4x + x2 = 0 + 44

Combine like terms: -44 + 44 = 0
0 + -4x + x2 = 0 + 44
-4x + x2 = 0 + 44

Combine like terms: 0 + 44 = 44
-4x + x2 = 44

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 = 44 + 4

Reorder the terms:
4 + -4x + x2 = 44 + 4

Combine like terms: 44 + 4 = 48
4 + -4x + x2 = 48

Factor a perfect square on the left side:
(x + -2)(x + -2) = 48

Calculate the square root of the right side: 6.92820323

Break this problem into two subproblems by setting 
(x + -2) equal to 6.92820323 and -6.92820323.

Subproblem 1

x + -2 = 6.92820323 Simplifying x + -2 = 6.92820323 Reorder the terms: -2 + x = 6.92820323 Solving -2 + x = 6.92820323 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 = 6.92820323 + 2 Combine like terms: -2 + 2 = 0 0 + x = 6.92820323 + 2 x = 6.92820323 + 2 Combine like terms: 6.92820323 + 2 = 8.92820323 x = 8.92820323 Simplifying x = 8.92820323

Subproblem 2

x + -2 = -6.92820323 Simplifying x + -2 = -6.92820323 Reorder the terms: -2 + x = -6.92820323 Solving -2 + x = -6.92820323 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 = -6.92820323 + 2 Combine like terms: -2 + 2 = 0 0 + x = -6.92820323 + 2 x = -6.92820323 + 2 Combine like terms: -6.92820323 + 2 = -4.92820323 x = -4.92820323 Simplifying x = -4.92820323

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.92820323, -4.92820323}

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