3v^2-18v=14

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Solution for 3v^2-18v=14 equation:


Simplifying
3v2 + -18v = 14

Reorder the terms:
-18v + 3v2 = 14

Solving
-18v + 3v2 = 14

Solving for variable 'v'.

Reorder the terms:
-14 + -18v + 3v2 = 14 + -14

Combine like terms: 14 + -14 = 0
-14 + -18v + 3v2 = 0

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

Divide each side by '3'.
-4.666666667 + -6v + v2 = 0

Move the constant term to the right:

Add '4.666666667' to each side of the equation.
-4.666666667 + -6v + 4.666666667 + v2 = 0 + 4.666666667

Reorder the terms:
-4.666666667 + 4.666666667 + -6v + v2 = 0 + 4.666666667

Combine like terms: -4.666666667 + 4.666666667 = 0.000000000
0.000000000 + -6v + v2 = 0 + 4.666666667
-6v + v2 = 0 + 4.666666667

Combine like terms: 0 + 4.666666667 = 4.666666667
-6v + v2 = 4.666666667

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 = 4.666666667 + 9

Reorder the terms:
9 + -6v + v2 = 4.666666667 + 9

Combine like terms: 4.666666667 + 9 = 13.666666667
9 + -6v + v2 = 13.666666667

Factor a perfect square on the left side:
(v + -3)(v + -3) = 13.666666667

Calculate the square root of the right side: 3.696845502

Break this problem into two subproblems by setting 
(v + -3) equal to 3.696845502 and -3.696845502.

Subproblem 1

v + -3 = 3.696845502 Simplifying v + -3 = 3.696845502 Reorder the terms: -3 + v = 3.696845502 Solving -3 + v = 3.696845502 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 = 3.696845502 + 3 Combine like terms: -3 + 3 = 0 0 + v = 3.696845502 + 3 v = 3.696845502 + 3 Combine like terms: 3.696845502 + 3 = 6.696845502 v = 6.696845502 Simplifying v = 6.696845502

Subproblem 2

v + -3 = -3.696845502 Simplifying v + -3 = -3.696845502 Reorder the terms: -3 + v = -3.696845502 Solving -3 + v = -3.696845502 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 = -3.696845502 + 3 Combine like terms: -3 + 3 = 0 0 + v = -3.696845502 + 3 v = -3.696845502 + 3 Combine like terms: -3.696845502 + 3 = -0.696845502 v = -0.696845502 Simplifying v = -0.696845502

Solution

The solution to the problem is based on the solutions from the subproblems. v = {6.696845502, -0.696845502}

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