m^2-8m=14

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Solution for m^2-8m=14 equation:


Simplifying
m2 + -8m = 14

Reorder the terms:
-8m + m2 = 14

Solving
-8m + m2 = 14

Solving for variable 'm'.

Reorder the terms:
-14 + -8m + m2 = 14 + -14

Combine like terms: 14 + -14 = 0
-14 + -8m + m2 = 0

Begin completing the square.

Move the constant term to the right:

Add '14' to each side of the equation.
-14 + -8m + 14 + m2 = 0 + 14

Reorder the terms:
-14 + 14 + -8m + m2 = 0 + 14

Combine like terms: -14 + 14 = 0
0 + -8m + m2 = 0 + 14
-8m + m2 = 0 + 14

Combine like terms: 0 + 14 = 14
-8m + m2 = 14

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 = 14 + 16

Reorder the terms:
16 + -8m + m2 = 14 + 16

Combine like terms: 14 + 16 = 30
16 + -8m + m2 = 30

Factor a perfect square on the left side:
(m + -4)(m + -4) = 30

Calculate the square root of the right side: 5.477225575

Break this problem into two subproblems by setting 
(m + -4) equal to 5.477225575 and -5.477225575.

Subproblem 1

m + -4 = 5.477225575 Simplifying m + -4 = 5.477225575 Reorder the terms: -4 + m = 5.477225575 Solving -4 + m = 5.477225575 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 = 5.477225575 + 4 Combine like terms: -4 + 4 = 0 0 + m = 5.477225575 + 4 m = 5.477225575 + 4 Combine like terms: 5.477225575 + 4 = 9.477225575 m = 9.477225575 Simplifying m = 9.477225575

Subproblem 2

m + -4 = -5.477225575 Simplifying m + -4 = -5.477225575 Reorder the terms: -4 + m = -5.477225575 Solving -4 + m = -5.477225575 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 = -5.477225575 + 4 Combine like terms: -4 + 4 = 0 0 + m = -5.477225575 + 4 m = -5.477225575 + 4 Combine like terms: -5.477225575 + 4 = -1.477225575 m = -1.477225575 Simplifying m = -1.477225575

Solution

The solution to the problem is based on the solutions from the subproblems. m = {9.477225575, -1.477225575}

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