v^2-12v=-4

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Solution for v^2-12v=-4 equation:


Simplifying
v2 + -12v = -4

Reorder the terms:
-12v + v2 = -4

Solving
-12v + v2 = -4

Solving for variable 'v'.

Reorder the terms:
4 + -12v + v2 = -4 + 4

Combine like terms: -4 + 4 = 0
4 + -12v + v2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + -12v + -4 + v2 = 0 + -4

Reorder the terms:
4 + -4 + -12v + v2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -12v + v2 = 0 + -4
-12v + v2 = 0 + -4

Combine like terms: 0 + -4 = -4
-12v + v2 = -4

The v term is -12v.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12v + 36 + v2 = -4 + 36

Reorder the terms:
36 + -12v + v2 = -4 + 36

Combine like terms: -4 + 36 = 32
36 + -12v + v2 = 32

Factor a perfect square on the left side:
(v + -6)(v + -6) = 32

Calculate the square root of the right side: 5.656854249

Break this problem into two subproblems by setting 
(v + -6) equal to 5.656854249 and -5.656854249.

Subproblem 1

v + -6 = 5.656854249 Simplifying v + -6 = 5.656854249 Reorder the terms: -6 + v = 5.656854249 Solving -6 + v = 5.656854249 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + v = 5.656854249 + 6 Combine like terms: -6 + 6 = 0 0 + v = 5.656854249 + 6 v = 5.656854249 + 6 Combine like terms: 5.656854249 + 6 = 11.656854249 v = 11.656854249 Simplifying v = 11.656854249

Subproblem 2

v + -6 = -5.656854249 Simplifying v + -6 = -5.656854249 Reorder the terms: -6 + v = -5.656854249 Solving -6 + v = -5.656854249 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + v = -5.656854249 + 6 Combine like terms: -6 + 6 = 0 0 + v = -5.656854249 + 6 v = -5.656854249 + 6 Combine like terms: -5.656854249 + 6 = 0.343145751 v = 0.343145751 Simplifying v = 0.343145751

Solution

The solution to the problem is based on the solutions from the subproblems. v = {11.656854249, 0.343145751}

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