36x^2+18x+1=0

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Solution for 36x^2+18x+1=0 equation:


Simplifying
36x2 + 18x + 1 = 0

Reorder the terms:
1 + 18x + 36x2 = 0

Solving
1 + 18x + 36x2 = 0

Solving for variable 'x'.

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

Divide each side by '36'.
0.02777777778 + 0.5x + x2 = 0

Move the constant term to the right:

Add '-0.02777777778' to each side of the equation.
0.02777777778 + 0.5x + -0.02777777778 + x2 = 0 + -0.02777777778

Reorder the terms:
0.02777777778 + -0.02777777778 + 0.5x + x2 = 0 + -0.02777777778

Combine like terms: 0.02777777778 + -0.02777777778 = 0.00000000000
0.00000000000 + 0.5x + x2 = 0 + -0.02777777778
0.5x + x2 = 0 + -0.02777777778

Combine like terms: 0 + -0.02777777778 = -0.02777777778
0.5x + x2 = -0.02777777778

The x term is 0.5x.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5x + 0.0625 + x2 = -0.02777777778 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = -0.02777777778 + 0.0625

Combine like terms: -0.02777777778 + 0.0625 = 0.03472222222
0.0625 + 0.5x + x2 = 0.03472222222

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = 0.03472222222

Calculate the square root of the right side: 0.186338998

Break this problem into two subproblems by setting 
(x + 0.25) equal to 0.186338998 and -0.186338998.

Subproblem 1

x + 0.25 = 0.186338998 Simplifying x + 0.25 = 0.186338998 Reorder the terms: 0.25 + x = 0.186338998 Solving 0.25 + x = 0.186338998 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = 0.186338998 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = 0.186338998 + -0.25 x = 0.186338998 + -0.25 Combine like terms: 0.186338998 + -0.25 = -0.063661002 x = -0.063661002 Simplifying x = -0.063661002

Subproblem 2

x + 0.25 = -0.186338998 Simplifying x + 0.25 = -0.186338998 Reorder the terms: 0.25 + x = -0.186338998 Solving 0.25 + x = -0.186338998 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = -0.186338998 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = -0.186338998 + -0.25 x = -0.186338998 + -0.25 Combine like terms: -0.186338998 + -0.25 = -0.436338998 x = -0.436338998 Simplifying x = -0.436338998

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.063661002, -0.436338998}

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