39m^2-14m-99=0

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Solution for 39m^2-14m-99=0 equation:


Simplifying
39m2 + -14m + -99 = 0

Reorder the terms:
-99 + -14m + 39m2 = 0

Solving
-99 + -14m + 39m2 = 0

Solving for variable 'm'.

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

Divide each side by '39'.
-2.538461538 + -0.358974359m + m2 = 0

Move the constant term to the right:

Add '2.538461538' to each side of the equation.
-2.538461538 + -0.358974359m + 2.538461538 + m2 = 0 + 2.538461538

Reorder the terms:
-2.538461538 + 2.538461538 + -0.358974359m + m2 = 0 + 2.538461538

Combine like terms: -2.538461538 + 2.538461538 = 0.000000000
0.000000000 + -0.358974359m + m2 = 0 + 2.538461538
-0.358974359m + m2 = 0 + 2.538461538

Combine like terms: 0 + 2.538461538 = 2.538461538
-0.358974359m + m2 = 2.538461538

The m term is -0.358974359m.  Take half its coefficient (-0.1794871795).
Square it (0.03221564760) and add it to both sides.

Add '0.03221564760' to each side of the equation.
-0.358974359m + 0.03221564760 + m2 = 2.538461538 + 0.03221564760

Reorder the terms:
0.03221564760 + -0.358974359m + m2 = 2.538461538 + 0.03221564760

Combine like terms: 2.538461538 + 0.03221564760 = 2.5706771856
0.03221564760 + -0.358974359m + m2 = 2.5706771856

Factor a perfect square on the left side:
(m + -0.1794871795)(m + -0.1794871795) = 2.5706771856

Calculate the square root of the right side: 1.603333149

Break this problem into two subproblems by setting 
(m + -0.1794871795) equal to 1.603333149 and -1.603333149.

Subproblem 1

m + -0.1794871795 = 1.603333149 Simplifying m + -0.1794871795 = 1.603333149 Reorder the terms: -0.1794871795 + m = 1.603333149 Solving -0.1794871795 + m = 1.603333149 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.1794871795' to each side of the equation. -0.1794871795 + 0.1794871795 + m = 1.603333149 + 0.1794871795 Combine like terms: -0.1794871795 + 0.1794871795 = 0.0000000000 0.0000000000 + m = 1.603333149 + 0.1794871795 m = 1.603333149 + 0.1794871795 Combine like terms: 1.603333149 + 0.1794871795 = 1.7828203285 m = 1.7828203285 Simplifying m = 1.7828203285

Subproblem 2

m + -0.1794871795 = -1.603333149 Simplifying m + -0.1794871795 = -1.603333149 Reorder the terms: -0.1794871795 + m = -1.603333149 Solving -0.1794871795 + m = -1.603333149 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.1794871795' to each side of the equation. -0.1794871795 + 0.1794871795 + m = -1.603333149 + 0.1794871795 Combine like terms: -0.1794871795 + 0.1794871795 = 0.0000000000 0.0000000000 + m = -1.603333149 + 0.1794871795 m = -1.603333149 + 0.1794871795 Combine like terms: -1.603333149 + 0.1794871795 = -1.4238459695 m = -1.4238459695 Simplifying m = -1.4238459695

Solution

The solution to the problem is based on the solutions from the subproblems. m = {1.7828203285, -1.4238459695}

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