v^2-6v-1=0

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Solution for v^2-6v-1=0 equation:


Simplifying
v2 + -6v + -1 = 0

Reorder the terms:
-1 + -6v + v2 = 0

Solving
-1 + -6v + v2 = 0

Solving for variable 'v'.

Begin completing the square.

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -6v + 1 + v2 = 0 + 1

Reorder the terms:
-1 + 1 + -6v + v2 = 0 + 1

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

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

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 = 1 + 9

Reorder the terms:
9 + -6v + v2 = 1 + 9

Combine like terms: 1 + 9 = 10
9 + -6v + v2 = 10

Factor a perfect square on the left side:
(v + -3)(v + -3) = 10

Calculate the square root of the right side: 3.16227766

Break this problem into two subproblems by setting 
(v + -3) equal to 3.16227766 and -3.16227766.

Subproblem 1

v + -3 = 3.16227766 Simplifying v + -3 = 3.16227766 Reorder the terms: -3 + v = 3.16227766 Solving -3 + v = 3.16227766 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 = 3.16227766 + 3 Combine like terms: -3 + 3 = 0 0 + v = 3.16227766 + 3 v = 3.16227766 + 3 Combine like terms: 3.16227766 + 3 = 6.16227766 v = 6.16227766 Simplifying v = 6.16227766

Subproblem 2

v + -3 = -3.16227766 Simplifying v + -3 = -3.16227766 Reorder the terms: -3 + v = -3.16227766 Solving -3 + v = -3.16227766 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 = -3.16227766 + 3 Combine like terms: -3 + 3 = 0 0 + v = -3.16227766 + 3 v = -3.16227766 + 3 Combine like terms: -3.16227766 + 3 = -0.16227766 v = -0.16227766 Simplifying v = -0.16227766

Solution

The solution to the problem is based on the solutions from the subproblems. v = {6.16227766, -0.16227766}

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