11x+212=x^2

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Solution for 11x+212=x^2 equation:


Simplifying
11x + 212 = x2

Reorder the terms:
212 + 11x = x2

Solving
212 + 11x = x2

Solving for variable 'x'.

Combine like terms: x2 + -1x2 = 0
212 + 11x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-212 + -11x + x2 = 0

Move the constant term to the right:

Add '212' to each side of the equation.
-212 + -11x + 212 + x2 = 0 + 212

Reorder the terms:
-212 + 212 + -11x + x2 = 0 + 212

Combine like terms: -212 + 212 = 0
0 + -11x + x2 = 0 + 212
-11x + x2 = 0 + 212

Combine like terms: 0 + 212 = 212
-11x + x2 = 212

The x term is -11x.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11x + 30.25 + x2 = 212 + 30.25

Reorder the terms:
30.25 + -11x + x2 = 212 + 30.25

Combine like terms: 212 + 30.25 = 242.25
30.25 + -11x + x2 = 242.25

Factor a perfect square on the left side:
(x + -5.5)(x + -5.5) = 242.25

Calculate the square root of the right side: 15.564382416

Break this problem into two subproblems by setting 
(x + -5.5) equal to 15.564382416 and -15.564382416.

Subproblem 1

x + -5.5 = 15.564382416 Simplifying x + -5.5 = 15.564382416 Reorder the terms: -5.5 + x = 15.564382416 Solving -5.5 + x = 15.564382416 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = 15.564382416 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = 15.564382416 + 5.5 x = 15.564382416 + 5.5 Combine like terms: 15.564382416 + 5.5 = 21.064382416 x = 21.064382416 Simplifying x = 21.064382416

Subproblem 2

x + -5.5 = -15.564382416 Simplifying x + -5.5 = -15.564382416 Reorder the terms: -5.5 + x = -15.564382416 Solving -5.5 + x = -15.564382416 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = -15.564382416 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = -15.564382416 + 5.5 x = -15.564382416 + 5.5 Combine like terms: -15.564382416 + 5.5 = -10.064382416 x = -10.064382416 Simplifying x = -10.064382416

Solution

The solution to the problem is based on the solutions from the subproblems. x = {21.064382416, -10.064382416}

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