25m^2-10m-111=0

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Solution for 25m^2-10m-111=0 equation:


Simplifying
25m2 + -10m + -111 = 0

Reorder the terms:
-111 + -10m + 25m2 = 0

Solving
-111 + -10m + 25m2 = 0

Solving for variable 'm'.

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

Divide each side by '25'.
-4.44 + -0.4m + m2 = 0

Move the constant term to the right:

Add '4.44' to each side of the equation.
-4.44 + -0.4m + 4.44 + m2 = 0 + 4.44

Reorder the terms:
-4.44 + 4.44 + -0.4m + m2 = 0 + 4.44

Combine like terms: -4.44 + 4.44 = 0.00
0.00 + -0.4m + m2 = 0 + 4.44
-0.4m + m2 = 0 + 4.44

Combine like terms: 0 + 4.44 = 4.44
-0.4m + m2 = 4.44

The m term is -0.4m.  Take half its coefficient (-0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
-0.4m + 0.04 + m2 = 4.44 + 0.04

Reorder the terms:
0.04 + -0.4m + m2 = 4.44 + 0.04

Combine like terms: 4.44 + 0.04 = 4.48
0.04 + -0.4m + m2 = 4.48

Factor a perfect square on the left side:
(m + -0.2)(m + -0.2) = 4.48

Calculate the square root of the right side: 2.116601049

Break this problem into two subproblems by setting 
(m + -0.2) equal to 2.116601049 and -2.116601049.

Subproblem 1

m + -0.2 = 2.116601049 Simplifying m + -0.2 = 2.116601049 Reorder the terms: -0.2 + m = 2.116601049 Solving -0.2 + m = 2.116601049 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.2' to each side of the equation. -0.2 + 0.2 + m = 2.116601049 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + m = 2.116601049 + 0.2 m = 2.116601049 + 0.2 Combine like terms: 2.116601049 + 0.2 = 2.316601049 m = 2.316601049 Simplifying m = 2.316601049

Subproblem 2

m + -0.2 = -2.116601049 Simplifying m + -0.2 = -2.116601049 Reorder the terms: -0.2 + m = -2.116601049 Solving -0.2 + m = -2.116601049 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.2' to each side of the equation. -0.2 + 0.2 + m = -2.116601049 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + m = -2.116601049 + 0.2 m = -2.116601049 + 0.2 Combine like terms: -2.116601049 + 0.2 = -1.916601049 m = -1.916601049 Simplifying m = -1.916601049

Solution

The solution to the problem is based on the solutions from the subproblems. m = {2.316601049, -1.916601049}

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