m^2-20m+61=9

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Solution for m^2-20m+61=9 equation:


Simplifying
m2 + -20m + 61 = 9

Reorder the terms:
61 + -20m + m2 = 9

Solving
61 + -20m + m2 = 9

Solving for variable 'm'.

Reorder the terms:
61 + -9 + -20m + m2 = 9 + -9

Combine like terms: 61 + -9 = 52
52 + -20m + m2 = 9 + -9

Combine like terms: 9 + -9 = 0
52 + -20m + m2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-52' to each side of the equation.
52 + -20m + -52 + m2 = 0 + -52

Reorder the terms:
52 + -52 + -20m + m2 = 0 + -52

Combine like terms: 52 + -52 = 0
0 + -20m + m2 = 0 + -52
-20m + m2 = 0 + -52

Combine like terms: 0 + -52 = -52
-20m + m2 = -52

The m term is -20m.  Take half its coefficient (-10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
-20m + 100 + m2 = -52 + 100

Reorder the terms:
100 + -20m + m2 = -52 + 100

Combine like terms: -52 + 100 = 48
100 + -20m + m2 = 48

Factor a perfect square on the left side:
(m + -10)(m + -10) = 48

Calculate the square root of the right side: 6.92820323

Break this problem into two subproblems by setting 
(m + -10) equal to 6.92820323 and -6.92820323.

Subproblem 1

m + -10 = 6.92820323 Simplifying m + -10 = 6.92820323 Reorder the terms: -10 + m = 6.92820323 Solving -10 + m = 6.92820323 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + m = 6.92820323 + 10 Combine like terms: -10 + 10 = 0 0 + m = 6.92820323 + 10 m = 6.92820323 + 10 Combine like terms: 6.92820323 + 10 = 16.92820323 m = 16.92820323 Simplifying m = 16.92820323

Subproblem 2

m + -10 = -6.92820323 Simplifying m + -10 = -6.92820323 Reorder the terms: -10 + m = -6.92820323 Solving -10 + m = -6.92820323 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + m = -6.92820323 + 10 Combine like terms: -10 + 10 = 0 0 + m = -6.92820323 + 10 m = -6.92820323 + 10 Combine like terms: -6.92820323 + 10 = 3.07179677 m = 3.07179677 Simplifying m = 3.07179677

Solution

The solution to the problem is based on the solutions from the subproblems. m = {16.92820323, 3.07179677}

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