m^2-25m+120=0

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Solution for m^2-25m+120=0 equation:


Simplifying
m2 + -25m + 120 = 0

Reorder the terms:
120 + -25m + m2 = 0

Solving
120 + -25m + m2 = 0

Solving for variable 'm'.

Begin completing the square.

Move the constant term to the right:

Add '-120' to each side of the equation.
120 + -25m + -120 + m2 = 0 + -120

Reorder the terms:
120 + -120 + -25m + m2 = 0 + -120

Combine like terms: 120 + -120 = 0
0 + -25m + m2 = 0 + -120
-25m + m2 = 0 + -120

Combine like terms: 0 + -120 = -120
-25m + m2 = -120

The m term is -25m.  Take half its coefficient (-12.5).
Square it (156.25) and add it to both sides.

Add '156.25' to each side of the equation.
-25m + 156.25 + m2 = -120 + 156.25

Reorder the terms:
156.25 + -25m + m2 = -120 + 156.25

Combine like terms: -120 + 156.25 = 36.25
156.25 + -25m + m2 = 36.25

Factor a perfect square on the left side:
(m + -12.5)(m + -12.5) = 36.25

Calculate the square root of the right side: 6.020797289

Break this problem into two subproblems by setting 
(m + -12.5) equal to 6.020797289 and -6.020797289.

Subproblem 1

m + -12.5 = 6.020797289 Simplifying m + -12.5 = 6.020797289 Reorder the terms: -12.5 + m = 6.020797289 Solving -12.5 + m = 6.020797289 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '12.5' to each side of the equation. -12.5 + 12.5 + m = 6.020797289 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + m = 6.020797289 + 12.5 m = 6.020797289 + 12.5 Combine like terms: 6.020797289 + 12.5 = 18.520797289 m = 18.520797289 Simplifying m = 18.520797289

Subproblem 2

m + -12.5 = -6.020797289 Simplifying m + -12.5 = -6.020797289 Reorder the terms: -12.5 + m = -6.020797289 Solving -12.5 + m = -6.020797289 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '12.5' to each side of the equation. -12.5 + 12.5 + m = -6.020797289 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + m = -6.020797289 + 12.5 m = -6.020797289 + 12.5 Combine like terms: -6.020797289 + 12.5 = 6.479202711 m = 6.479202711 Simplifying m = 6.479202711

Solution

The solution to the problem is based on the solutions from the subproblems. m = {18.520797289, 6.479202711}

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