m^2-14m=-9

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Solution for m^2-14m=-9 equation:


Simplifying
m2 + -14m = -9

Reorder the terms:
-14m + m2 = -9

Solving
-14m + m2 = -9

Solving for variable 'm'.

Reorder the terms:
9 + -14m + m2 = -9 + 9

Combine like terms: -9 + 9 = 0
9 + -14m + m2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-9' to each side of the equation.
9 + -14m + -9 + m2 = 0 + -9

Reorder the terms:
9 + -9 + -14m + m2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -14m + m2 = 0 + -9
-14m + m2 = 0 + -9

Combine like terms: 0 + -9 = -9
-14m + m2 = -9

The m term is -14m.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14m + 49 + m2 = -9 + 49

Reorder the terms:
49 + -14m + m2 = -9 + 49

Combine like terms: -9 + 49 = 40
49 + -14m + m2 = 40

Factor a perfect square on the left side:
(m + -7)(m + -7) = 40

Calculate the square root of the right side: 6.32455532

Break this problem into two subproblems by setting 
(m + -7) equal to 6.32455532 and -6.32455532.

Subproblem 1

m + -7 = 6.32455532 Simplifying m + -7 = 6.32455532 Reorder the terms: -7 + m = 6.32455532 Solving -7 + m = 6.32455532 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + m = 6.32455532 + 7 Combine like terms: -7 + 7 = 0 0 + m = 6.32455532 + 7 m = 6.32455532 + 7 Combine like terms: 6.32455532 + 7 = 13.32455532 m = 13.32455532 Simplifying m = 13.32455532

Subproblem 2

m + -7 = -6.32455532 Simplifying m + -7 = -6.32455532 Reorder the terms: -7 + m = -6.32455532 Solving -7 + m = -6.32455532 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + m = -6.32455532 + 7 Combine like terms: -7 + 7 = 0 0 + m = -6.32455532 + 7 m = -6.32455532 + 7 Combine like terms: -6.32455532 + 7 = 0.67544468 m = 0.67544468 Simplifying m = 0.67544468

Solution

The solution to the problem is based on the solutions from the subproblems. m = {13.32455532, 0.67544468}

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