X^2+22X+1=0

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Solution for X^2+22X+1=0 equation:


Simplifying
X2 + 22X + 1 = 0

Reorder the terms:
1 + 22X + X2 = 0

Solving
1 + 22X + X2 = 0

Solving for variable 'X'.

Begin completing the square.

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + 22X + -1 + X2 = 0 + -1

Reorder the terms:
1 + -1 + 22X + X2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 22X + X2 = 0 + -1
22X + X2 = 0 + -1

Combine like terms: 0 + -1 = -1
22X + X2 = -1

The X term is 22X.  Take half its coefficient (11).
Square it (121) and add it to both sides.

Add '121' to each side of the equation.
22X + 121 + X2 = -1 + 121

Reorder the terms:
121 + 22X + X2 = -1 + 121

Combine like terms: -1 + 121 = 120
121 + 22X + X2 = 120

Factor a perfect square on the left side:
(X + 11)(X + 11) = 120

Calculate the square root of the right side: 10.95445115

Break this problem into two subproblems by setting 
(X + 11) equal to 10.95445115 and -10.95445115.

Subproblem 1

X + 11 = 10.95445115 Simplifying X + 11 = 10.95445115 Reorder the terms: 11 + X = 10.95445115 Solving 11 + X = 10.95445115 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + X = 10.95445115 + -11 Combine like terms: 11 + -11 = 0 0 + X = 10.95445115 + -11 X = 10.95445115 + -11 Combine like terms: 10.95445115 + -11 = -0.04554885 X = -0.04554885 Simplifying X = -0.04554885

Subproblem 2

X + 11 = -10.95445115 Simplifying X + 11 = -10.95445115 Reorder the terms: 11 + X = -10.95445115 Solving 11 + X = -10.95445115 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + X = -10.95445115 + -11 Combine like terms: 11 + -11 = 0 0 + X = -10.95445115 + -11 X = -10.95445115 + -11 Combine like terms: -10.95445115 + -11 = -21.95445115 X = -21.95445115 Simplifying X = -21.95445115

Solution

The solution to the problem is based on the solutions from the subproblems. X = {-0.04554885, -21.95445115}

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