m^2=7m+13

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Solution for m^2=7m+13 equation:


Simplifying
m2 = 7m + 13

Reorder the terms:
m2 = 13 + 7m

Solving
m2 = 13 + 7m

Solving for variable 'm'.

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

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

Combine like terms: 13 + -13 = 0
-13 + -7m + m2 = 0 + 7m + -7m
-13 + -7m + m2 = 7m + -7m

Combine like terms: 7m + -7m = 0
-13 + -7m + m2 = 0

Begin completing the square.

Move the constant term to the right:

Add '13' to each side of the equation.
-13 + -7m + 13 + m2 = 0 + 13

Reorder the terms:
-13 + 13 + -7m + m2 = 0 + 13

Combine like terms: -13 + 13 = 0
0 + -7m + m2 = 0 + 13
-7m + m2 = 0 + 13

Combine like terms: 0 + 13 = 13
-7m + m2 = 13

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 = 13 + 12.25

Reorder the terms:
12.25 + -7m + m2 = 13 + 12.25

Combine like terms: 13 + 12.25 = 25.25
12.25 + -7m + m2 = 25.25

Factor a perfect square on the left side:
(m + -3.5)(m + -3.5) = 25.25

Calculate the square root of the right side: 5.024937811

Break this problem into two subproblems by setting 
(m + -3.5) equal to 5.024937811 and -5.024937811.

Subproblem 1

m + -3.5 = 5.024937811 Simplifying m + -3.5 = 5.024937811 Reorder the terms: -3.5 + m = 5.024937811 Solving -3.5 + m = 5.024937811 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 = 5.024937811 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + m = 5.024937811 + 3.5 m = 5.024937811 + 3.5 Combine like terms: 5.024937811 + 3.5 = 8.524937811 m = 8.524937811 Simplifying m = 8.524937811

Subproblem 2

m + -3.5 = -5.024937811 Simplifying m + -3.5 = -5.024937811 Reorder the terms: -3.5 + m = -5.024937811 Solving -3.5 + m = -5.024937811 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 = -5.024937811 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + m = -5.024937811 + 3.5 m = -5.024937811 + 3.5 Combine like terms: -5.024937811 + 3.5 = -1.524937811 m = -1.524937811 Simplifying m = -1.524937811

Solution

The solution to the problem is based on the solutions from the subproblems. m = {8.524937811, -1.524937811}

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