10v^2+6v-13=0

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Solution for 10v^2+6v-13=0 equation:


Simplifying
10v2 + 6v + -13 = 0

Reorder the terms:
-13 + 6v + 10v2 = 0

Solving
-13 + 6v + 10v2 = 0

Solving for variable 'v'.

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

Divide each side by '10'.
-1.3 + 0.6v + v2 = 0

Move the constant term to the right:

Add '1.3' to each side of the equation.
-1.3 + 0.6v + 1.3 + v2 = 0 + 1.3

Reorder the terms:
-1.3 + 1.3 + 0.6v + v2 = 0 + 1.3

Combine like terms: -1.3 + 1.3 = 0.0
0.0 + 0.6v + v2 = 0 + 1.3
0.6v + v2 = 0 + 1.3

Combine like terms: 0 + 1.3 = 1.3
0.6v + v2 = 1.3

The v term is 0.6v.  Take half its coefficient (0.3).
Square it (0.09) and add it to both sides.

Add '0.09' to each side of the equation.
0.6v + 0.09 + v2 = 1.3 + 0.09

Reorder the terms:
0.09 + 0.6v + v2 = 1.3 + 0.09

Combine like terms: 1.3 + 0.09 = 1.39
0.09 + 0.6v + v2 = 1.39

Factor a perfect square on the left side:
(v + 0.3)(v + 0.3) = 1.39

Calculate the square root of the right side: 1.178982612

Break this problem into two subproblems by setting 
(v + 0.3) equal to 1.178982612 and -1.178982612.

Subproblem 1

v + 0.3 = 1.178982612 Simplifying v + 0.3 = 1.178982612 Reorder the terms: 0.3 + v = 1.178982612 Solving 0.3 + v = 1.178982612 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-0.3' to each side of the equation. 0.3 + -0.3 + v = 1.178982612 + -0.3 Combine like terms: 0.3 + -0.3 = 0.0 0.0 + v = 1.178982612 + -0.3 v = 1.178982612 + -0.3 Combine like terms: 1.178982612 + -0.3 = 0.878982612 v = 0.878982612 Simplifying v = 0.878982612

Subproblem 2

v + 0.3 = -1.178982612 Simplifying v + 0.3 = -1.178982612 Reorder the terms: 0.3 + v = -1.178982612 Solving 0.3 + v = -1.178982612 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-0.3' to each side of the equation. 0.3 + -0.3 + v = -1.178982612 + -0.3 Combine like terms: 0.3 + -0.3 = 0.0 0.0 + v = -1.178982612 + -0.3 v = -1.178982612 + -0.3 Combine like terms: -1.178982612 + -0.3 = -1.478982612 v = -1.478982612 Simplifying v = -1.478982612

Solution

The solution to the problem is based on the solutions from the subproblems. v = {0.878982612, -1.478982612}

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