3x^2+2x+1=38

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Solution for 3x^2+2x+1=38 equation:


Simplifying
3x2 + 2x + 1 = 38

Reorder the terms:
1 + 2x + 3x2 = 38

Solving
1 + 2x + 3x2 = 38

Solving for variable 'x'.

Reorder the terms:
1 + -38 + 2x + 3x2 = 38 + -38

Combine like terms: 1 + -38 = -37
-37 + 2x + 3x2 = 38 + -38

Combine like terms: 38 + -38 = 0
-37 + 2x + 3x2 = 0

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

Divide each side by '3'.
-12.33333333 + 0.6666666667x + x2 = 0

Move the constant term to the right:

Add '12.33333333' to each side of the equation.
-12.33333333 + 0.6666666667x + 12.33333333 + x2 = 0 + 12.33333333

Reorder the terms:
-12.33333333 + 12.33333333 + 0.6666666667x + x2 = 0 + 12.33333333

Combine like terms: -12.33333333 + 12.33333333 = 0.00000000
0.00000000 + 0.6666666667x + x2 = 0 + 12.33333333
0.6666666667x + x2 = 0 + 12.33333333

Combine like terms: 0 + 12.33333333 = 12.33333333
0.6666666667x + x2 = 12.33333333

The x term is 0.6666666667x.  Take half its coefficient (0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
0.6666666667x + 0.1111111112 + x2 = 12.33333333 + 0.1111111112

Reorder the terms:
0.1111111112 + 0.6666666667x + x2 = 12.33333333 + 0.1111111112

Combine like terms: 12.33333333 + 0.1111111112 = 12.4444444412
0.1111111112 + 0.6666666667x + x2 = 12.4444444412

Factor a perfect square on the left side:
(x + 0.3333333334)(x + 0.3333333334) = 12.4444444412

Calculate the square root of the right side: 3.527668414

Break this problem into two subproblems by setting 
(x + 0.3333333334) equal to 3.527668414 and -3.527668414.

Subproblem 1

x + 0.3333333334 = 3.527668414 Simplifying x + 0.3333333334 = 3.527668414 Reorder the terms: 0.3333333334 + x = 3.527668414 Solving 0.3333333334 + x = 3.527668414 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3333333334' to each side of the equation. 0.3333333334 + -0.3333333334 + x = 3.527668414 + -0.3333333334 Combine like terms: 0.3333333334 + -0.3333333334 = 0.0000000000 0.0000000000 + x = 3.527668414 + -0.3333333334 x = 3.527668414 + -0.3333333334 Combine like terms: 3.527668414 + -0.3333333334 = 3.1943350806 x = 3.1943350806 Simplifying x = 3.1943350806

Subproblem 2

x + 0.3333333334 = -3.527668414 Simplifying x + 0.3333333334 = -3.527668414 Reorder the terms: 0.3333333334 + x = -3.527668414 Solving 0.3333333334 + x = -3.527668414 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3333333334' to each side of the equation. 0.3333333334 + -0.3333333334 + x = -3.527668414 + -0.3333333334 Combine like terms: 0.3333333334 + -0.3333333334 = 0.0000000000 0.0000000000 + x = -3.527668414 + -0.3333333334 x = -3.527668414 + -0.3333333334 Combine like terms: -3.527668414 + -0.3333333334 = -3.8610017474 x = -3.8610017474 Simplifying x = -3.8610017474

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.1943350806, -3.8610017474}

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