12x^2-9x+1.44=0

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Solution for 12x^2-9x+1.44=0 equation:


Simplifying
12x2 + -9x + 1.44 = 0

Reorder the terms:
1.44 + -9x + 12x2 = 0

Solving
1.44 + -9x + 12x2 = 0

Solving for variable 'x'.

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

Divide each side by '12'.
0.12 + -0.75x + x2 = 0

Move the constant term to the right:

Add '-0.12' to each side of the equation.
0.12 + -0.75x + -0.12 + x2 = 0 + -0.12

Reorder the terms:
0.12 + -0.12 + -0.75x + x2 = 0 + -0.12

Combine like terms: 0.12 + -0.12 = 0.00
0.00 + -0.75x + x2 = 0 + -0.12
-0.75x + x2 = 0 + -0.12

Combine like terms: 0 + -0.12 = -0.12
-0.75x + x2 = -0.12

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 = -0.12 + 0.140625

Reorder the terms:
0.140625 + -0.75x + x2 = -0.12 + 0.140625

Combine like terms: -0.12 + 0.140625 = 0.020625
0.140625 + -0.75x + x2 = 0.020625

Factor a perfect square on the left side:
(x + -0.375)(x + -0.375) = 0.020625

Calculate the square root of the right side: 0.143614066

Break this problem into two subproblems by setting 
(x + -0.375) equal to 0.143614066 and -0.143614066.

Subproblem 1

x + -0.375 = 0.143614066 Simplifying x + -0.375 = 0.143614066 Reorder the terms: -0.375 + x = 0.143614066 Solving -0.375 + x = 0.143614066 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 = 0.143614066 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = 0.143614066 + 0.375 x = 0.143614066 + 0.375 Combine like terms: 0.143614066 + 0.375 = 0.518614066 x = 0.518614066 Simplifying x = 0.518614066

Subproblem 2

x + -0.375 = -0.143614066 Simplifying x + -0.375 = -0.143614066 Reorder the terms: -0.375 + x = -0.143614066 Solving -0.375 + x = -0.143614066 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 = -0.143614066 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = -0.143614066 + 0.375 x = -0.143614066 + 0.375 Combine like terms: -0.143614066 + 0.375 = 0.231385934 x = 0.231385934 Simplifying x = 0.231385934

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.518614066, 0.231385934}

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