X^2=1-4X

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Solution for X^2=1-4X equation:


Simplifying
X2 = 1 + -4X

Solving
X2 = 1 + -4X

Solving for variable 'X'.

Reorder the terms:
-1 + 4X + X2 = 1 + -4X + -1 + 4X

Reorder the terms:
-1 + 4X + X2 = 1 + -1 + -4X + 4X

Combine like terms: 1 + -1 = 0
-1 + 4X + X2 = 0 + -4X + 4X
-1 + 4X + X2 = -4X + 4X

Combine like terms: -4X + 4X = 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 = 0.236067978 X = 0.236067978 Simplifying X = 0.236067978

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 = -4.236067978 X = -4.236067978 Simplifying X = -4.236067978

Solution

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

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