m^2-12m-89=0

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Solution for m^2-12m-89=0 equation:


Simplifying
m2 + -12m + -89 = 0

Reorder the terms:
-89 + -12m + m2 = 0

Solving
-89 + -12m + m2 = 0

Solving for variable 'm'.

Begin completing the square.

Move the constant term to the right:

Add '89' to each side of the equation.
-89 + -12m + 89 + m2 = 0 + 89

Reorder the terms:
-89 + 89 + -12m + m2 = 0 + 89

Combine like terms: -89 + 89 = 0
0 + -12m + m2 = 0 + 89
-12m + m2 = 0 + 89

Combine like terms: 0 + 89 = 89
-12m + m2 = 89

The m term is -12m.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12m + 36 + m2 = 89 + 36

Reorder the terms:
36 + -12m + m2 = 89 + 36

Combine like terms: 89 + 36 = 125
36 + -12m + m2 = 125

Factor a perfect square on the left side:
(m + -6)(m + -6) = 125

Calculate the square root of the right side: 11.180339887

Break this problem into two subproblems by setting 
(m + -6) equal to 11.180339887 and -11.180339887.

Subproblem 1

m + -6 = 11.180339887 Simplifying m + -6 = 11.180339887 Reorder the terms: -6 + m = 11.180339887 Solving -6 + m = 11.180339887 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + m = 11.180339887 + 6 Combine like terms: -6 + 6 = 0 0 + m = 11.180339887 + 6 m = 11.180339887 + 6 Combine like terms: 11.180339887 + 6 = 17.180339887 m = 17.180339887 Simplifying m = 17.180339887

Subproblem 2

m + -6 = -11.180339887 Simplifying m + -6 = -11.180339887 Reorder the terms: -6 + m = -11.180339887 Solving -6 + m = -11.180339887 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + m = -11.180339887 + 6 Combine like terms: -6 + 6 = 0 0 + m = -11.180339887 + 6 m = -11.180339887 + 6 Combine like terms: -11.180339887 + 6 = -5.180339887 m = -5.180339887 Simplifying m = -5.180339887

Solution

The solution to the problem is based on the solutions from the subproblems. m = {17.180339887, -5.180339887}

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