x^2-.4285-4x=

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Solution for x^2-.4285-4x= equation:


Simplifying
x2 + -0.4285 + -4x = 0

Reorder the terms:
-0.4285 + -4x + x2 = 0

Solving
-0.4285 + -4x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '0.4285' to each side of the equation.
-0.4285 + -4x + 0.4285 + x2 = 0 + 0.4285

Reorder the terms:
-0.4285 + 0.4285 + -4x + x2 = 0 + 0.4285

Combine like terms: -0.4285 + 0.4285 = 0.0000
0.0000 + -4x + x2 = 0 + 0.4285
-4x + x2 = 0 + 0.4285

Combine like terms: 0 + 0.4285 = 0.4285
-4x + x2 = 0.4285

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 = 0.4285 + 4

Reorder the terms:
4 + -4x + x2 = 0.4285 + 4

Combine like terms: 0.4285 + 4 = 4.4285
4 + -4x + x2 = 4.4285

Factor a perfect square on the left side:
(x + -2)(x + -2) = 4.4285

Calculate the square root of the right side: 2.104400152

Break this problem into two subproblems by setting 
(x + -2) equal to 2.104400152 and -2.104400152.

Subproblem 1

x + -2 = 2.104400152 Simplifying x + -2 = 2.104400152 Reorder the terms: -2 + x = 2.104400152 Solving -2 + x = 2.104400152 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 = 2.104400152 + 2 Combine like terms: -2 + 2 = 0 0 + x = 2.104400152 + 2 x = 2.104400152 + 2 Combine like terms: 2.104400152 + 2 = 4.104400152 x = 4.104400152 Simplifying x = 4.104400152

Subproblem 2

x + -2 = -2.104400152 Simplifying x + -2 = -2.104400152 Reorder the terms: -2 + x = -2.104400152 Solving -2 + x = -2.104400152 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 = -2.104400152 + 2 Combine like terms: -2 + 2 = 0 0 + x = -2.104400152 + 2 x = -2.104400152 + 2 Combine like terms: -2.104400152 + 2 = -0.104400152 x = -0.104400152 Simplifying x = -0.104400152

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.104400152, -0.104400152}

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