v^2+12v-30=0

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Solution for v^2+12v-30=0 equation:


Simplifying
v2 + 12v + -30 = 0

Reorder the terms:
-30 + 12v + v2 = 0

Solving
-30 + 12v + v2 = 0

Solving for variable 'v'.

Begin completing the square.

Move the constant term to the right:

Add '30' to each side of the equation.
-30 + 12v + 30 + v2 = 0 + 30

Reorder the terms:
-30 + 30 + 12v + v2 = 0 + 30

Combine like terms: -30 + 30 = 0
0 + 12v + v2 = 0 + 30
12v + v2 = 0 + 30

Combine like terms: 0 + 30 = 30
12v + v2 = 30

The v term is 12v.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12v + 36 + v2 = 30 + 36

Reorder the terms:
36 + 12v + v2 = 30 + 36

Combine like terms: 30 + 36 = 66
36 + 12v + v2 = 66

Factor a perfect square on the left side:
(v + 6)(v + 6) = 66

Calculate the square root of the right side: 8.124038405

Break this problem into two subproblems by setting 
(v + 6) equal to 8.124038405 and -8.124038405.

Subproblem 1

v + 6 = 8.124038405 Simplifying v + 6 = 8.124038405 Reorder the terms: 6 + v = 8.124038405 Solving 6 + v = 8.124038405 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + v = 8.124038405 + -6 Combine like terms: 6 + -6 = 0 0 + v = 8.124038405 + -6 v = 8.124038405 + -6 Combine like terms: 8.124038405 + -6 = 2.124038405 v = 2.124038405 Simplifying v = 2.124038405

Subproblem 2

v + 6 = -8.124038405 Simplifying v + 6 = -8.124038405 Reorder the terms: 6 + v = -8.124038405 Solving 6 + v = -8.124038405 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + v = -8.124038405 + -6 Combine like terms: 6 + -6 = 0 0 + v = -8.124038405 + -6 v = -8.124038405 + -6 Combine like terms: -8.124038405 + -6 = -14.124038405 v = -14.124038405 Simplifying v = -14.124038405

Solution

The solution to the problem is based on the solutions from the subproblems. v = {2.124038405, -14.124038405}

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