12x^2-44x-7=0

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Solution for 12x^2-44x-7=0 equation:


Simplifying
12x2 + -44x + -7 = 0

Reorder the terms:
-7 + -44x + 12x2 = 0

Solving
-7 + -44x + 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'.
-0.5833333333 + -3.666666667x + x2 = 0

Move the constant term to the right:

Add '0.5833333333' to each side of the equation.
-0.5833333333 + -3.666666667x + 0.5833333333 + x2 = 0 + 0.5833333333

Reorder the terms:
-0.5833333333 + 0.5833333333 + -3.666666667x + x2 = 0 + 0.5833333333

Combine like terms: -0.5833333333 + 0.5833333333 = 0.0000000000
0.0000000000 + -3.666666667x + x2 = 0 + 0.5833333333
-3.666666667x + x2 = 0 + 0.5833333333

Combine like terms: 0 + 0.5833333333 = 0.5833333333
-3.666666667x + x2 = 0.5833333333

The x term is -3.666666667x.  Take half its coefficient (-1.833333334).
Square it (3.361111114) and add it to both sides.

Add '3.361111114' to each side of the equation.
-3.666666667x + 3.361111114 + x2 = 0.5833333333 + 3.361111114

Reorder the terms:
3.361111114 + -3.666666667x + x2 = 0.5833333333 + 3.361111114

Combine like terms: 0.5833333333 + 3.361111114 = 3.9444444473
3.361111114 + -3.666666667x + x2 = 3.9444444473

Factor a perfect square on the left side:
(x + -1.833333334)(x + -1.833333334) = 3.9444444473

Calculate the square root of the right side: 1.986062549

Break this problem into two subproblems by setting 
(x + -1.833333334) equal to 1.986062549 and -1.986062549.

Subproblem 1

x + -1.833333334 = 1.986062549 Simplifying x + -1.833333334 = 1.986062549 Reorder the terms: -1.833333334 + x = 1.986062549 Solving -1.833333334 + x = 1.986062549 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.833333334' to each side of the equation. -1.833333334 + 1.833333334 + x = 1.986062549 + 1.833333334 Combine like terms: -1.833333334 + 1.833333334 = 0.000000000 0.000000000 + x = 1.986062549 + 1.833333334 x = 1.986062549 + 1.833333334 Combine like terms: 1.986062549 + 1.833333334 = 3.819395883 x = 3.819395883 Simplifying x = 3.819395883

Subproblem 2

x + -1.833333334 = -1.986062549 Simplifying x + -1.833333334 = -1.986062549 Reorder the terms: -1.833333334 + x = -1.986062549 Solving -1.833333334 + x = -1.986062549 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.833333334' to each side of the equation. -1.833333334 + 1.833333334 + x = -1.986062549 + 1.833333334 Combine like terms: -1.833333334 + 1.833333334 = 0.000000000 0.000000000 + x = -1.986062549 + 1.833333334 x = -1.986062549 + 1.833333334 Combine like terms: -1.986062549 + 1.833333334 = -0.152729215 x = -0.152729215 Simplifying x = -0.152729215

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.819395883, -0.152729215}

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