.02v^2+2.2v-439=0

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Solution for .02v^2+2.2v-439=0 equation:


Simplifying
0.02v2 + 2.2v + -439 = 0

Reorder the terms:
-439 + 2.2v + 0.02v2 = 0

Solving
-439 + 2.2v + 0.02v2 = 0

Solving for variable 'v'.

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

Divide each side by '0.02'.
-21950 + 110v + v2 = 0

Move the constant term to the right:

Add '21950' to each side of the equation.
-21950 + 110v + 21950 + v2 = 0 + 21950

Reorder the terms:
-21950 + 21950 + 110v + v2 = 0 + 21950

Combine like terms: -21950 + 21950 = 0
0 + 110v + v2 = 0 + 21950
110v + v2 = 0 + 21950

Combine like terms: 0 + 21950 = 21950
110v + v2 = 21950

The v term is 110v.  Take half its coefficient (55).
Square it (3025) and add it to both sides.

Add '3025' to each side of the equation.
110v + 3025 + v2 = 21950 + 3025

Reorder the terms:
3025 + 110v + v2 = 21950 + 3025

Combine like terms: 21950 + 3025 = 24975
3025 + 110v + v2 = 24975

Factor a perfect square on the left side:
(v + 55)(v + 55) = 24975

Calculate the square root of the right side: 158.034806293

Break this problem into two subproblems by setting 
(v + 55) equal to 158.034806293 and -158.034806293.

Subproblem 1

v + 55 = 158.034806293 Simplifying v + 55 = 158.034806293 Reorder the terms: 55 + v = 158.034806293 Solving 55 + v = 158.034806293 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-55' to each side of the equation. 55 + -55 + v = 158.034806293 + -55 Combine like terms: 55 + -55 = 0 0 + v = 158.034806293 + -55 v = 158.034806293 + -55 Combine like terms: 158.034806293 + -55 = 103.034806293 v = 103.034806293 Simplifying v = 103.034806293

Subproblem 2

v + 55 = -158.034806293 Simplifying v + 55 = -158.034806293 Reorder the terms: 55 + v = -158.034806293 Solving 55 + v = -158.034806293 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-55' to each side of the equation. 55 + -55 + v = -158.034806293 + -55 Combine like terms: 55 + -55 = 0 0 + v = -158.034806293 + -55 v = -158.034806293 + -55 Combine like terms: -158.034806293 + -55 = -213.034806293 v = -213.034806293 Simplifying v = -213.034806293

Solution

The solution to the problem is based on the solutions from the subproblems. v = {103.034806293, -213.034806293}

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