0=-12x^2-9x+1

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Solution for 0=-12x^2-9x+1 equation:


Simplifying
0 = -12x2 + -9x + 1

Reorder the terms:
0 = 1 + -9x + -12x2

Solving
0 = 1 + -9x + -12x2

Solving for variable 'x'.

Combine like terms: 0 + -1 = -1
-1 + 9x + 12x2 = 1 + -9x + -12x2 + -1 + 9x + 12x2

Reorder the terms:
-1 + 9x + 12x2 = 1 + -1 + -9x + 9x + -12x2 + 12x2

Combine like terms: 1 + -1 = 0
-1 + 9x + 12x2 = 0 + -9x + 9x + -12x2 + 12x2
-1 + 9x + 12x2 = -9x + 9x + -12x2 + 12x2

Combine like terms: -9x + 9x = 0
-1 + 9x + 12x2 = 0 + -12x2 + 12x2
-1 + 9x + 12x2 = -12x2 + 12x2

Combine like terms: -12x2 + 12x2 = 0
-1 + 9x + 12x2 = 0

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

Divide each side by '12'.
-0.08333333333 + 0.75x + x2 = 0

Move the constant term to the right:

Add '0.08333333333' to each side of the equation.
-0.08333333333 + 0.75x + 0.08333333333 + x2 = 0 + 0.08333333333

Reorder the terms:
-0.08333333333 + 0.08333333333 + 0.75x + x2 = 0 + 0.08333333333

Combine like terms: -0.08333333333 + 0.08333333333 = 0.00000000000
0.00000000000 + 0.75x + x2 = 0 + 0.08333333333
0.75x + x2 = 0 + 0.08333333333

Combine like terms: 0 + 0.08333333333 = 0.08333333333
0.75x + x2 = 0.08333333333

The x term is 0.75x.  Take half its coefficient (0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
0.75x + 0.140625 + x2 = 0.08333333333 + 0.140625

Reorder the terms:
0.140625 + 0.75x + x2 = 0.08333333333 + 0.140625

Combine like terms: 0.08333333333 + 0.140625 = 0.22395833333
0.140625 + 0.75x + x2 = 0.22395833333

Factor a perfect square on the left side:
(x + 0.375)(x + 0.375) = 0.22395833333

Calculate the square root of the right side: 0.473242362

Break this problem into two subproblems by setting 
(x + 0.375) equal to 0.473242362 and -0.473242362.

Subproblem 1

x + 0.375 = 0.473242362 Simplifying x + 0.375 = 0.473242362 Reorder the terms: 0.375 + x = 0.473242362 Solving 0.375 + x = 0.473242362 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + x = 0.473242362 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + x = 0.473242362 + -0.375 x = 0.473242362 + -0.375 Combine like terms: 0.473242362 + -0.375 = 0.098242362 x = 0.098242362 Simplifying x = 0.098242362

Subproblem 2

x + 0.375 = -0.473242362 Simplifying x + 0.375 = -0.473242362 Reorder the terms: 0.375 + x = -0.473242362 Solving 0.375 + x = -0.473242362 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + x = -0.473242362 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + x = -0.473242362 + -0.375 x = -0.473242362 + -0.375 Combine like terms: -0.473242362 + -0.375 = -0.848242362 x = -0.848242362 Simplifying x = -0.848242362

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.098242362, -0.848242362}

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