2m^2-7m-7m-13=-10

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Solution for 2m^2-7m-7m-13=-10 equation:


Simplifying
2m2 + -7m + -7m + -13 = -10

Reorder the terms:
-13 + -7m + -7m + 2m2 = -10

Combine like terms: -7m + -7m = -14m
-13 + -14m + 2m2 = -10

Solving
-13 + -14m + 2m2 = -10

Solving for variable 'm'.

Reorder the terms:
-13 + 10 + -14m + 2m2 = -10 + 10

Combine like terms: -13 + 10 = -3
-3 + -14m + 2m2 = -10 + 10

Combine like terms: -10 + 10 = 0
-3 + -14m + 2m2 = 0

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

Divide each side by '2'.
-1.5 + -7m + m2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + -7m + 1.5 + m2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + -7m + m2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + -7m + m2 = 0 + 1.5
-7m + m2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
-7m + m2 = 1.5

The m term is -7m.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7m + 12.25 + m2 = 1.5 + 12.25

Reorder the terms:
12.25 + -7m + m2 = 1.5 + 12.25

Combine like terms: 1.5 + 12.25 = 13.75
12.25 + -7m + m2 = 13.75

Factor a perfect square on the left side:
(m + -3.5)(m + -3.5) = 13.75

Calculate the square root of the right side: 3.708099244

Break this problem into two subproblems by setting 
(m + -3.5) equal to 3.708099244 and -3.708099244.

Subproblem 1

m + -3.5 = 3.708099244 Simplifying m + -3.5 = 3.708099244 Reorder the terms: -3.5 + m = 3.708099244 Solving -3.5 + m = 3.708099244 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + m = 3.708099244 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + m = 3.708099244 + 3.5 m = 3.708099244 + 3.5 Combine like terms: 3.708099244 + 3.5 = 7.208099244 m = 7.208099244 Simplifying m = 7.208099244

Subproblem 2

m + -3.5 = -3.708099244 Simplifying m + -3.5 = -3.708099244 Reorder the terms: -3.5 + m = -3.708099244 Solving -3.5 + m = -3.708099244 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + m = -3.708099244 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + m = -3.708099244 + 3.5 m = -3.708099244 + 3.5 Combine like terms: -3.708099244 + 3.5 = -0.208099244 m = -0.208099244 Simplifying m = -0.208099244

Solution

The solution to the problem is based on the solutions from the subproblems. m = {7.208099244, -0.208099244}

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