v^2-10v-1=0

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Solution for v^2-10v-1=0 equation:


Simplifying
v2 + -10v + -1 = 0

Reorder the terms:
-1 + -10v + v2 = 0

Solving
-1 + -10v + 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 + -10v + 1 + v2 = 0 + 1

Reorder the terms:
-1 + 1 + -10v + v2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -10v + v2 = 0 + 1
-10v + v2 = 0 + 1

Combine like terms: 0 + 1 = 1
-10v + v2 = 1

The v term is -10v.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10v + 25 + v2 = 1 + 25

Reorder the terms:
25 + -10v + v2 = 1 + 25

Combine like terms: 1 + 25 = 26
25 + -10v + v2 = 26

Factor a perfect square on the left side:
(v + -5)(v + -5) = 26

Calculate the square root of the right side: 5.099019514

Break this problem into two subproblems by setting 
(v + -5) equal to 5.099019514 and -5.099019514.

Subproblem 1

v + -5 = 5.099019514 Simplifying v + -5 = 5.099019514 Reorder the terms: -5 + v = 5.099019514 Solving -5 + v = 5.099019514 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + v = 5.099019514 + 5 Combine like terms: -5 + 5 = 0 0 + v = 5.099019514 + 5 v = 5.099019514 + 5 Combine like terms: 5.099019514 + 5 = 10.099019514 v = 10.099019514 Simplifying v = 10.099019514

Subproblem 2

v + -5 = -5.099019514 Simplifying v + -5 = -5.099019514 Reorder the terms: -5 + v = -5.099019514 Solving -5 + v = -5.099019514 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + v = -5.099019514 + 5 Combine like terms: -5 + 5 = 0 0 + v = -5.099019514 + 5 v = -5.099019514 + 5 Combine like terms: -5.099019514 + 5 = -0.099019514 v = -0.099019514 Simplifying v = -0.099019514

Solution

The solution to the problem is based on the solutions from the subproblems. v = {10.099019514, -0.099019514}

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