11x^2-3x+2=121

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Solution for 11x^2-3x+2=121 equation:


Simplifying
11x2 + -3x + 2 = 121

Reorder the terms:
2 + -3x + 11x2 = 121

Solving
2 + -3x + 11x2 = 121

Solving for variable 'x'.

Reorder the terms:
2 + -121 + -3x + 11x2 = 121 + -121

Combine like terms: 2 + -121 = -119
-119 + -3x + 11x2 = 121 + -121

Combine like terms: 121 + -121 = 0
-119 + -3x + 11x2 = 0

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

Divide each side by '11'.
-10.81818182 + -0.2727272727x + x2 = 0

Move the constant term to the right:

Add '10.81818182' to each side of the equation.
-10.81818182 + -0.2727272727x + 10.81818182 + x2 = 0 + 10.81818182

Reorder the terms:
-10.81818182 + 10.81818182 + -0.2727272727x + x2 = 0 + 10.81818182

Combine like terms: -10.81818182 + 10.81818182 = 0.00000000
0.00000000 + -0.2727272727x + x2 = 0 + 10.81818182
-0.2727272727x + x2 = 0 + 10.81818182

Combine like terms: 0 + 10.81818182 = 10.81818182
-0.2727272727x + x2 = 10.81818182

The x term is -0.2727272727x.  Take half its coefficient (-0.1363636364).
Square it (0.01859504133) and add it to both sides.

Add '0.01859504133' to each side of the equation.
-0.2727272727x + 0.01859504133 + x2 = 10.81818182 + 0.01859504133

Reorder the terms:
0.01859504133 + -0.2727272727x + x2 = 10.81818182 + 0.01859504133

Combine like terms: 10.81818182 + 0.01859504133 = 10.83677686133
0.01859504133 + -0.2727272727x + x2 = 10.83677686133

Factor a perfect square on the left side:
(x + -0.1363636364)(x + -0.1363636364) = 10.83677686133

Calculate the square root of the right side: 3.291926011

Break this problem into two subproblems by setting 
(x + -0.1363636364) equal to 3.291926011 and -3.291926011.

Subproblem 1

x + -0.1363636364 = 3.291926011 Simplifying x + -0.1363636364 = 3.291926011 Reorder the terms: -0.1363636364 + x = 3.291926011 Solving -0.1363636364 + x = 3.291926011 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1363636364' to each side of the equation. -0.1363636364 + 0.1363636364 + x = 3.291926011 + 0.1363636364 Combine like terms: -0.1363636364 + 0.1363636364 = 0.0000000000 0.0000000000 + x = 3.291926011 + 0.1363636364 x = 3.291926011 + 0.1363636364 Combine like terms: 3.291926011 + 0.1363636364 = 3.4282896474 x = 3.4282896474 Simplifying x = 3.4282896474

Subproblem 2

x + -0.1363636364 = -3.291926011 Simplifying x + -0.1363636364 = -3.291926011 Reorder the terms: -0.1363636364 + x = -3.291926011 Solving -0.1363636364 + x = -3.291926011 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1363636364' to each side of the equation. -0.1363636364 + 0.1363636364 + x = -3.291926011 + 0.1363636364 Combine like terms: -0.1363636364 + 0.1363636364 = 0.0000000000 0.0000000000 + x = -3.291926011 + 0.1363636364 x = -3.291926011 + 0.1363636364 Combine like terms: -3.291926011 + 0.1363636364 = -3.1555623746 x = -3.1555623746 Simplifying x = -3.1555623746

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.4282896474, -3.1555623746}

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