6x^2+25x+12=0

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Solution for 6x^2+25x+12=0 equation:


Simplifying
6x2 + 25x + 12 = 0

Reorder the terms:
12 + 25x + 6x2 = 0

Solving
12 + 25x + 6x2 = 0

Solving for variable 'x'.

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

Divide each side by '6'.
2 + 4.166666667x + x2 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + 4.166666667x + -2 + x2 = 0 + -2

Reorder the terms:
2 + -2 + 4.166666667x + x2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 4.166666667x + x2 = 0 + -2
4.166666667x + x2 = 0 + -2

Combine like terms: 0 + -2 = -2
4.166666667x + x2 = -2

The x term is 4.166666667x.  Take half its coefficient (2.083333334).
Square it (4.340277781) and add it to both sides.

Add '4.340277781' to each side of the equation.
4.166666667x + 4.340277781 + x2 = -2 + 4.340277781

Reorder the terms:
4.340277781 + 4.166666667x + x2 = -2 + 4.340277781

Combine like terms: -2 + 4.340277781 = 2.340277781
4.340277781 + 4.166666667x + x2 = 2.340277781

Factor a perfect square on the left side:
(x + 2.083333334)(x + 2.083333334) = 2.340277781

Calculate the square root of the right side: 1.529796647

Break this problem into two subproblems by setting 
(x + 2.083333334) equal to 1.529796647 and -1.529796647.

Subproblem 1

x + 2.083333334 = 1.529796647 Simplifying x + 2.083333334 = 1.529796647 Reorder the terms: 2.083333334 + x = 1.529796647 Solving 2.083333334 + x = 1.529796647 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.083333334' to each side of the equation. 2.083333334 + -2.083333334 + x = 1.529796647 + -2.083333334 Combine like terms: 2.083333334 + -2.083333334 = 0.000000000 0.000000000 + x = 1.529796647 + -2.083333334 x = 1.529796647 + -2.083333334 Combine like terms: 1.529796647 + -2.083333334 = -0.553536687 x = -0.553536687 Simplifying x = -0.553536687

Subproblem 2

x + 2.083333334 = -1.529796647 Simplifying x + 2.083333334 = -1.529796647 Reorder the terms: 2.083333334 + x = -1.529796647 Solving 2.083333334 + x = -1.529796647 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.083333334' to each side of the equation. 2.083333334 + -2.083333334 + x = -1.529796647 + -2.083333334 Combine like terms: 2.083333334 + -2.083333334 = 0.000000000 0.000000000 + x = -1.529796647 + -2.083333334 x = -1.529796647 + -2.083333334 Combine like terms: -1.529796647 + -2.083333334 = -3.613129981 x = -3.613129981 Simplifying x = -3.613129981

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.553536687, -3.613129981}

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