3m^2-15m-22=0

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Solution for 3m^2-15m-22=0 equation:


Simplifying
3m2 + -15m + -22 = 0

Reorder the terms:
-22 + -15m + 3m2 = 0

Solving
-22 + -15m + 3m2 = 0

Solving for variable 'm'.

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

Divide each side by '3'.
-7.333333333 + -5m + m2 = 0

Move the constant term to the right:

Add '7.333333333' to each side of the equation.
-7.333333333 + -5m + 7.333333333 + m2 = 0 + 7.333333333

Reorder the terms:
-7.333333333 + 7.333333333 + -5m + m2 = 0 + 7.333333333

Combine like terms: -7.333333333 + 7.333333333 = 0.000000000
0.000000000 + -5m + m2 = 0 + 7.333333333
-5m + m2 = 0 + 7.333333333

Combine like terms: 0 + 7.333333333 = 7.333333333
-5m + m2 = 7.333333333

The m term is -5m.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5m + 6.25 + m2 = 7.333333333 + 6.25

Reorder the terms:
6.25 + -5m + m2 = 7.333333333 + 6.25

Combine like terms: 7.333333333 + 6.25 = 13.583333333
6.25 + -5m + m2 = 13.583333333

Factor a perfect square on the left side:
(m + -2.5)(m + -2.5) = 13.583333333

Calculate the square root of the right side: 3.685557398

Break this problem into two subproblems by setting 
(m + -2.5) equal to 3.685557398 and -3.685557398.

Subproblem 1

m + -2.5 = 3.685557398 Simplifying m + -2.5 = 3.685557398 Reorder the terms: -2.5 + m = 3.685557398 Solving -2.5 + m = 3.685557398 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + m = 3.685557398 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + m = 3.685557398 + 2.5 m = 3.685557398 + 2.5 Combine like terms: 3.685557398 + 2.5 = 6.185557398 m = 6.185557398 Simplifying m = 6.185557398

Subproblem 2

m + -2.5 = -3.685557398 Simplifying m + -2.5 = -3.685557398 Reorder the terms: -2.5 + m = -3.685557398 Solving -2.5 + m = -3.685557398 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + m = -3.685557398 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + m = -3.685557398 + 2.5 m = -3.685557398 + 2.5 Combine like terms: -3.685557398 + 2.5 = -1.185557398 m = -1.185557398 Simplifying m = -1.185557398

Solution

The solution to the problem is based on the solutions from the subproblems. m = {6.185557398, -1.185557398}

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