m^2+2m-13=0

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Solution for m^2+2m-13=0 equation:


Simplifying
m2 + 2m + -13 = 0

Reorder the terms:
-13 + 2m + m2 = 0

Solving
-13 + 2m + m2 = 0

Solving for variable 'm'.

Begin completing the square.

Move the constant term to the right:

Add '13' to each side of the equation.
-13 + 2m + 13 + m2 = 0 + 13

Reorder the terms:
-13 + 13 + 2m + m2 = 0 + 13

Combine like terms: -13 + 13 = 0
0 + 2m + m2 = 0 + 13
2m + m2 = 0 + 13

Combine like terms: 0 + 13 = 13
2m + m2 = 13

The m term is 2m.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2m + 1 + m2 = 13 + 1

Reorder the terms:
1 + 2m + m2 = 13 + 1

Combine like terms: 13 + 1 = 14
1 + 2m + m2 = 14

Factor a perfect square on the left side:
(m + 1)(m + 1) = 14

Calculate the square root of the right side: 3.741657387

Break this problem into two subproblems by setting 
(m + 1) equal to 3.741657387 and -3.741657387.

Subproblem 1

m + 1 = 3.741657387 Simplifying m + 1 = 3.741657387 Reorder the terms: 1 + m = 3.741657387 Solving 1 + m = 3.741657387 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + m = 3.741657387 + -1 Combine like terms: 1 + -1 = 0 0 + m = 3.741657387 + -1 m = 3.741657387 + -1 Combine like terms: 3.741657387 + -1 = 2.741657387 m = 2.741657387 Simplifying m = 2.741657387

Subproblem 2

m + 1 = -3.741657387 Simplifying m + 1 = -3.741657387 Reorder the terms: 1 + m = -3.741657387 Solving 1 + m = -3.741657387 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + m = -3.741657387 + -1 Combine like terms: 1 + -1 = 0 0 + m = -3.741657387 + -1 m = -3.741657387 + -1 Combine like terms: -3.741657387 + -1 = -4.741657387 m = -4.741657387 Simplifying m = -4.741657387

Solution

The solution to the problem is based on the solutions from the subproblems. m = {2.741657387, -4.741657387}

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