m^2+2m=26

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Solution for m^2+2m=26 equation:


Simplifying
m2 + 2m = 26

Reorder the terms:
2m + m2 = 26

Solving
2m + m2 = 26

Solving for variable 'm'.

Reorder the terms:
-26 + 2m + m2 = 26 + -26

Combine like terms: 26 + -26 = 0
-26 + 2m + m2 = 0

Begin completing the square.

Move the constant term to the right:

Add '26' to each side of the equation.
-26 + 2m + 26 + m2 = 0 + 26

Reorder the terms:
-26 + 26 + 2m + m2 = 0 + 26

Combine like terms: -26 + 26 = 0
0 + 2m + m2 = 0 + 26
2m + m2 = 0 + 26

Combine like terms: 0 + 26 = 26
2m + m2 = 26

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 = 26 + 1

Reorder the terms:
1 + 2m + m2 = 26 + 1

Combine like terms: 26 + 1 = 27
1 + 2m + m2 = 27

Factor a perfect square on the left side:
(m + 1)(m + 1) = 27

Calculate the square root of the right side: 5.196152423

Break this problem into two subproblems by setting 
(m + 1) equal to 5.196152423 and -5.196152423.

Subproblem 1

m + 1 = 5.196152423 Simplifying m + 1 = 5.196152423 Reorder the terms: 1 + m = 5.196152423 Solving 1 + m = 5.196152423 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 = 5.196152423 + -1 Combine like terms: 1 + -1 = 0 0 + m = 5.196152423 + -1 m = 5.196152423 + -1 Combine like terms: 5.196152423 + -1 = 4.196152423 m = 4.196152423 Simplifying m = 4.196152423

Subproblem 2

m + 1 = -5.196152423 Simplifying m + 1 = -5.196152423 Reorder the terms: 1 + m = -5.196152423 Solving 1 + m = -5.196152423 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 = -5.196152423 + -1 Combine like terms: 1 + -1 = 0 0 + m = -5.196152423 + -1 m = -5.196152423 + -1 Combine like terms: -5.196152423 + -1 = -6.196152423 m = -6.196152423 Simplifying m = -6.196152423

Solution

The solution to the problem is based on the solutions from the subproblems. m = {4.196152423, -6.196152423}

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