67x^2+6x+11=122

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Solution for 67x^2+6x+11=122 equation:


Simplifying
67x2 + 6x + 11 = 122

Reorder the terms:
11 + 6x + 67x2 = 122

Solving
11 + 6x + 67x2 = 122

Solving for variable 'x'.

Reorder the terms:
11 + -122 + 6x + 67x2 = 122 + -122

Combine like terms: 11 + -122 = -111
-111 + 6x + 67x2 = 122 + -122

Combine like terms: 122 + -122 = 0
-111 + 6x + 67x2 = 0

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

Divide each side by '67'.
-1.656716418 + 0.08955223881x + x2 = 0

Move the constant term to the right:

Add '1.656716418' to each side of the equation.
-1.656716418 + 0.08955223881x + 1.656716418 + x2 = 0 + 1.656716418

Reorder the terms:
-1.656716418 + 1.656716418 + 0.08955223881x + x2 = 0 + 1.656716418

Combine like terms: -1.656716418 + 1.656716418 = 0.000000000
0.000000000 + 0.08955223881x + x2 = 0 + 1.656716418
0.08955223881x + x2 = 0 + 1.656716418

Combine like terms: 0 + 1.656716418 = 1.656716418
0.08955223881x + x2 = 1.656716418

The x term is 0.08955223881x.  Take half its coefficient (0.04477611941).
Square it (0.002004900869) and add it to both sides.

Add '0.002004900869' to each side of the equation.
0.08955223881x + 0.002004900869 + x2 = 1.656716418 + 0.002004900869

Reorder the terms:
0.002004900869 + 0.08955223881x + x2 = 1.656716418 + 0.002004900869

Combine like terms: 1.656716418 + 0.002004900869 = 1.658721318869
0.002004900869 + 0.08955223881x + x2 = 1.658721318869

Factor a perfect square on the left side:
(x + 0.04477611941)(x + 0.04477611941) = 1.658721318869

Calculate the square root of the right side: 1.287913553

Break this problem into two subproblems by setting 
(x + 0.04477611941) equal to 1.287913553 and -1.287913553.

Subproblem 1

x + 0.04477611941 = 1.287913553 Simplifying x + 0.04477611941 = 1.287913553 Reorder the terms: 0.04477611941 + x = 1.287913553 Solving 0.04477611941 + x = 1.287913553 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.04477611941' to each side of the equation. 0.04477611941 + -0.04477611941 + x = 1.287913553 + -0.04477611941 Combine like terms: 0.04477611941 + -0.04477611941 = 0.00000000000 0.00000000000 + x = 1.287913553 + -0.04477611941 x = 1.287913553 + -0.04477611941 Combine like terms: 1.287913553 + -0.04477611941 = 1.24313743359 x = 1.24313743359 Simplifying x = 1.24313743359

Subproblem 2

x + 0.04477611941 = -1.287913553 Simplifying x + 0.04477611941 = -1.287913553 Reorder the terms: 0.04477611941 + x = -1.287913553 Solving 0.04477611941 + x = -1.287913553 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.04477611941' to each side of the equation. 0.04477611941 + -0.04477611941 + x = -1.287913553 + -0.04477611941 Combine like terms: 0.04477611941 + -0.04477611941 = 0.00000000000 0.00000000000 + x = -1.287913553 + -0.04477611941 x = -1.287913553 + -0.04477611941 Combine like terms: -1.287913553 + -0.04477611941 = -1.33268967241 x = -1.33268967241 Simplifying x = -1.33268967241

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.24313743359, -1.33268967241}

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