m^2-6m-19=-7

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Solution for m^2-6m-19=-7 equation:


Simplifying
m2 + -6m + -19 = -7

Reorder the terms:
-19 + -6m + m2 = -7

Solving
-19 + -6m + m2 = -7

Solving for variable 'm'.

Reorder the terms:
-19 + 7 + -6m + m2 = -7 + 7

Combine like terms: -19 + 7 = -12
-12 + -6m + m2 = -7 + 7

Combine like terms: -7 + 7 = 0
-12 + -6m + m2 = 0

Begin completing the square.

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + -6m + 12 + m2 = 0 + 12

Reorder the terms:
-12 + 12 + -6m + m2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + -6m + m2 = 0 + 12
-6m + m2 = 0 + 12

Combine like terms: 0 + 12 = 12
-6m + m2 = 12

The m term is -6m.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6m + 9 + m2 = 12 + 9

Reorder the terms:
9 + -6m + m2 = 12 + 9

Combine like terms: 12 + 9 = 21
9 + -6m + m2 = 21

Factor a perfect square on the left side:
(m + -3)(m + -3) = 21

Calculate the square root of the right side: 4.582575695

Break this problem into two subproblems by setting 
(m + -3) equal to 4.582575695 and -4.582575695.

Subproblem 1

m + -3 = 4.582575695 Simplifying m + -3 = 4.582575695 Reorder the terms: -3 + m = 4.582575695 Solving -3 + m = 4.582575695 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + m = 4.582575695 + 3 Combine like terms: -3 + 3 = 0 0 + m = 4.582575695 + 3 m = 4.582575695 + 3 Combine like terms: 4.582575695 + 3 = 7.582575695 m = 7.582575695 Simplifying m = 7.582575695

Subproblem 2

m + -3 = -4.582575695 Simplifying m + -3 = -4.582575695 Reorder the terms: -3 + m = -4.582575695 Solving -3 + m = -4.582575695 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + m = -4.582575695 + 3 Combine like terms: -3 + 3 = 0 0 + m = -4.582575695 + 3 m = -4.582575695 + 3 Combine like terms: -4.582575695 + 3 = -1.582575695 m = -1.582575695 Simplifying m = -1.582575695

Solution

The solution to the problem is based on the solutions from the subproblems. m = {7.582575695, -1.582575695}

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