v^2-2v-14=0

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Solution for v^2-2v-14=0 equation:


Simplifying
v2 + -2v + -14 = 0

Reorder the terms:
-14 + -2v + v2 = 0

Solving
-14 + -2v + v2 = 0

Solving for variable 'v'.

Begin completing the square.

Move the constant term to the right:

Add '14' to each side of the equation.
-14 + -2v + 14 + v2 = 0 + 14

Reorder the terms:
-14 + 14 + -2v + v2 = 0 + 14

Combine like terms: -14 + 14 = 0
0 + -2v + v2 = 0 + 14
-2v + v2 = 0 + 14

Combine like terms: 0 + 14 = 14
-2v + v2 = 14

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 = 14 + 1

Reorder the terms:
1 + -2v + v2 = 14 + 1

Combine like terms: 14 + 1 = 15
1 + -2v + v2 = 15

Factor a perfect square on the left side:
(v + -1)(v + -1) = 15

Calculate the square root of the right side: 3.872983346

Break this problem into two subproblems by setting 
(v + -1) equal to 3.872983346 and -3.872983346.

Subproblem 1

v + -1 = 3.872983346 Simplifying v + -1 = 3.872983346 Reorder the terms: -1 + v = 3.872983346 Solving -1 + v = 3.872983346 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 = 3.872983346 + 1 Combine like terms: -1 + 1 = 0 0 + v = 3.872983346 + 1 v = 3.872983346 + 1 Combine like terms: 3.872983346 + 1 = 4.872983346 v = 4.872983346 Simplifying v = 4.872983346

Subproblem 2

v + -1 = -3.872983346 Simplifying v + -1 = -3.872983346 Reorder the terms: -1 + v = -3.872983346 Solving -1 + v = -3.872983346 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 = -3.872983346 + 1 Combine like terms: -1 + 1 = 0 0 + v = -3.872983346 + 1 v = -3.872983346 + 1 Combine like terms: -3.872983346 + 1 = -2.872983346 v = -2.872983346 Simplifying v = -2.872983346

Solution

The solution to the problem is based on the solutions from the subproblems. v = {4.872983346, -2.872983346}

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