m^2=8m+13

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Solution for m^2=8m+13 equation:


Simplifying
m2 = 8m + 13

Reorder the terms:
m2 = 13 + 8m

Solving
m2 = 13 + 8m

Solving for variable 'm'.

Reorder the terms:
-13 + -8m + m2 = 13 + 8m + -13 + -8m

Reorder the terms:
-13 + -8m + m2 = 13 + -13 + 8m + -8m

Combine like terms: 13 + -13 = 0
-13 + -8m + m2 = 0 + 8m + -8m
-13 + -8m + m2 = 8m + -8m

Combine like terms: 8m + -8m = 0
-13 + -8m + m2 = 0

Begin completing the square.

Move the constant term to the right:

Add '13' to each side of the equation.
-13 + -8m + 13 + m2 = 0 + 13

Reorder the terms:
-13 + 13 + -8m + m2 = 0 + 13

Combine like terms: -13 + 13 = 0
0 + -8m + m2 = 0 + 13
-8m + m2 = 0 + 13

Combine like terms: 0 + 13 = 13
-8m + m2 = 13

The m term is -8m.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8m + 16 + m2 = 13 + 16

Reorder the terms:
16 + -8m + m2 = 13 + 16

Combine like terms: 13 + 16 = 29
16 + -8m + m2 = 29

Factor a perfect square on the left side:
(m + -4)(m + -4) = 29

Calculate the square root of the right side: 5.385164807

Break this problem into two subproblems by setting 
(m + -4) equal to 5.385164807 and -5.385164807.

Subproblem 1

m + -4 = 5.385164807 Simplifying m + -4 = 5.385164807 Reorder the terms: -4 + m = 5.385164807 Solving -4 + m = 5.385164807 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + m = 5.385164807 + 4 Combine like terms: -4 + 4 = 0 0 + m = 5.385164807 + 4 m = 5.385164807 + 4 Combine like terms: 5.385164807 + 4 = 9.385164807 m = 9.385164807 Simplifying m = 9.385164807

Subproblem 2

m + -4 = -5.385164807 Simplifying m + -4 = -5.385164807 Reorder the terms: -4 + m = -5.385164807 Solving -4 + m = -5.385164807 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + m = -5.385164807 + 4 Combine like terms: -4 + 4 = 0 0 + m = -5.385164807 + 4 m = -5.385164807 + 4 Combine like terms: -5.385164807 + 4 = -1.385164807 m = -1.385164807 Simplifying m = -1.385164807

Solution

The solution to the problem is based on the solutions from the subproblems. m = {9.385164807, -1.385164807}

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