-v^2=6v-2

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Solution for -v^2=6v-2 equation:


Simplifying
-1v2 = 6v + -2

Reorder the terms:
-1v2 = -2 + 6v

Solving
-1v2 = -2 + 6v

Solving for variable 'v'.

Reorder the terms:
2 + -6v + -1v2 = -2 + 6v + 2 + -6v

Reorder the terms:
2 + -6v + -1v2 = -2 + 2 + 6v + -6v

Combine like terms: -2 + 2 = 0
2 + -6v + -1v2 = 0 + 6v + -6v
2 + -6v + -1v2 = 6v + -6v

Combine like terms: 6v + -6v = 0
2 + -6v + -1v2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-2 + 6v + v2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 6v + 2 + v2 = 0 + 2

Reorder the terms:
-2 + 2 + 6v + v2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 6v + v2 = 0 + 2
6v + v2 = 0 + 2

Combine like terms: 0 + 2 = 2
6v + v2 = 2

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

Add '9' to each side of the equation.
6v + 9 + v2 = 2 + 9

Reorder the terms:
9 + 6v + v2 = 2 + 9

Combine like terms: 2 + 9 = 11
9 + 6v + v2 = 11

Factor a perfect square on the left side:
(v + 3)(v + 3) = 11

Calculate the square root of the right side: 3.31662479

Break this problem into two subproblems by setting 
(v + 3) equal to 3.31662479 and -3.31662479.

Subproblem 1

v + 3 = 3.31662479 Simplifying v + 3 = 3.31662479 Reorder the terms: 3 + v = 3.31662479 Solving 3 + v = 3.31662479 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + v = 3.31662479 + -3 Combine like terms: 3 + -3 = 0 0 + v = 3.31662479 + -3 v = 3.31662479 + -3 Combine like terms: 3.31662479 + -3 = 0.31662479 v = 0.31662479 Simplifying v = 0.31662479

Subproblem 2

v + 3 = -3.31662479 Simplifying v + 3 = -3.31662479 Reorder the terms: 3 + v = -3.31662479 Solving 3 + v = -3.31662479 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + v = -3.31662479 + -3 Combine like terms: 3 + -3 = 0 0 + v = -3.31662479 + -3 v = -3.31662479 + -3 Combine like terms: -3.31662479 + -3 = -6.31662479 v = -6.31662479 Simplifying v = -6.31662479

Solution

The solution to the problem is based on the solutions from the subproblems. v = {0.31662479, -6.31662479}

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