v^2-2v-13=-2

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Solution for v^2-2v-13=-2 equation:


Simplifying
v2 + -2v + -13 = -2

Reorder the terms:
-13 + -2v + v2 = -2

Solving
-13 + -2v + v2 = -2

Solving for variable 'v'.

Reorder the terms:
-13 + 2 + -2v + v2 = -2 + 2

Combine like terms: -13 + 2 = -11
-11 + -2v + v2 = -2 + 2

Combine like terms: -2 + 2 = 0
-11 + -2v + v2 = 0

Begin completing the square.

Move the constant term to the right:

Add '11' to each side of the equation.
-11 + -2v + 11 + v2 = 0 + 11

Reorder the terms:
-11 + 11 + -2v + v2 = 0 + 11

Combine like terms: -11 + 11 = 0
0 + -2v + v2 = 0 + 11
-2v + v2 = 0 + 11

Combine like terms: 0 + 11 = 11
-2v + v2 = 11

The v term is -2v.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2v + 1 + v2 = 11 + 1

Reorder the terms:
1 + -2v + v2 = 11 + 1

Combine like terms: 11 + 1 = 12
1 + -2v + v2 = 12

Factor a perfect square on the left side:
(v + -1)(v + -1) = 12

Calculate the square root of the right side: 3.464101615

Break this problem into two subproblems by setting 
(v + -1) equal to 3.464101615 and -3.464101615.

Subproblem 1

v + -1 = 3.464101615 Simplifying v + -1 = 3.464101615 Reorder the terms: -1 + v = 3.464101615 Solving -1 + v = 3.464101615 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + v = 3.464101615 + 1 Combine like terms: -1 + 1 = 0 0 + v = 3.464101615 + 1 v = 3.464101615 + 1 Combine like terms: 3.464101615 + 1 = 4.464101615 v = 4.464101615 Simplifying v = 4.464101615

Subproblem 2

v + -1 = -3.464101615 Simplifying v + -1 = -3.464101615 Reorder the terms: -1 + v = -3.464101615 Solving -1 + v = -3.464101615 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + v = -3.464101615 + 1 Combine like terms: -1 + 1 = 0 0 + v = -3.464101615 + 1 v = -3.464101615 + 1 Combine like terms: -3.464101615 + 1 = -2.464101615 v = -2.464101615 Simplifying v = -2.464101615

Solution

The solution to the problem is based on the solutions from the subproblems. v = {4.464101615, -2.464101615}

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