-12x^2-19x+36=0

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Solution for -12x^2-19x+36=0 equation:


Simplifying
-12x2 + -19x + 36 = 0

Reorder the terms:
36 + -19x + -12x2 = 0

Solving
36 + -19x + -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'.
-3 + 1.583333333x + x2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + 1.583333333x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + 1.583333333x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 1.583333333x + x2 = 0 + 3
1.583333333x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
1.583333333x + x2 = 3

The x term is 1.583333333x.  Take half its coefficient (0.7916666665).
Square it (0.6267361108) and add it to both sides.

Add '0.6267361108' to each side of the equation.
1.583333333x + 0.6267361108 + x2 = 3 + 0.6267361108

Reorder the terms:
0.6267361108 + 1.583333333x + x2 = 3 + 0.6267361108

Combine like terms: 3 + 0.6267361108 = 3.6267361108
0.6267361108 + 1.583333333x + x2 = 3.6267361108

Factor a perfect square on the left side:
(x + 0.7916666665)(x + 0.7916666665) = 3.6267361108

Calculate the square root of the right side: 1.904399147

Break this problem into two subproblems by setting 
(x + 0.7916666665) equal to 1.904399147 and -1.904399147.

Subproblem 1

x + 0.7916666665 = 1.904399147 Simplifying x + 0.7916666665 = 1.904399147 Reorder the terms: 0.7916666665 + x = 1.904399147 Solving 0.7916666665 + x = 1.904399147 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7916666665' to each side of the equation. 0.7916666665 + -0.7916666665 + x = 1.904399147 + -0.7916666665 Combine like terms: 0.7916666665 + -0.7916666665 = 0.0000000000 0.0000000000 + x = 1.904399147 + -0.7916666665 x = 1.904399147 + -0.7916666665 Combine like terms: 1.904399147 + -0.7916666665 = 1.1127324805 x = 1.1127324805 Simplifying x = 1.1127324805

Subproblem 2

x + 0.7916666665 = -1.904399147 Simplifying x + 0.7916666665 = -1.904399147 Reorder the terms: 0.7916666665 + x = -1.904399147 Solving 0.7916666665 + x = -1.904399147 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7916666665' to each side of the equation. 0.7916666665 + -0.7916666665 + x = -1.904399147 + -0.7916666665 Combine like terms: 0.7916666665 + -0.7916666665 = 0.0000000000 0.0000000000 + x = -1.904399147 + -0.7916666665 x = -1.904399147 + -0.7916666665 Combine like terms: -1.904399147 + -0.7916666665 = -2.6960658135 x = -2.6960658135 Simplifying x = -2.6960658135

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.1127324805, -2.6960658135}

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