(3v^2-4v-4)+(5v^2-6v-6)-(3v^2+5v-3)=

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Solution for (3v^2-4v-4)+(5v^2-6v-6)-(3v^2+5v-3)= equation:


Simplifying
(3v2 + -4v + -4) + (5v2 + -6v + -6) + -1(3v2 + 5v + -3) = 0

Reorder the terms:
(-4 + -4v + 3v2) + (5v2 + -6v + -6) + -1(3v2 + 5v + -3) = 0

Remove parenthesis around (-4 + -4v + 3v2)
-4 + -4v + 3v2 + (5v2 + -6v + -6) + -1(3v2 + 5v + -3) = 0

Reorder the terms:
-4 + -4v + 3v2 + (-6 + -6v + 5v2) + -1(3v2 + 5v + -3) = 0

Remove parenthesis around (-6 + -6v + 5v2)
-4 + -4v + 3v2 + -6 + -6v + 5v2 + -1(3v2 + 5v + -3) = 0

Reorder the terms:
-4 + -4v + 3v2 + -6 + -6v + 5v2 + -1(-3 + 5v + 3v2) = 0
-4 + -4v + 3v2 + -6 + -6v + 5v2 + (-3 * -1 + 5v * -1 + 3v2 * -1) = 0
-4 + -4v + 3v2 + -6 + -6v + 5v2 + (3 + -5v + -3v2) = 0

Reorder the terms:
-4 + -6 + 3 + -4v + -6v + -5v + 3v2 + 5v2 + -3v2 = 0

Combine like terms: -4 + -6 = -10
-10 + 3 + -4v + -6v + -5v + 3v2 + 5v2 + -3v2 = 0

Combine like terms: -10 + 3 = -7
-7 + -4v + -6v + -5v + 3v2 + 5v2 + -3v2 = 0

Combine like terms: -4v + -6v = -10v
-7 + -10v + -5v + 3v2 + 5v2 + -3v2 = 0

Combine like terms: -10v + -5v = -15v
-7 + -15v + 3v2 + 5v2 + -3v2 = 0

Combine like terms: 3v2 + 5v2 = 8v2
-7 + -15v + 8v2 + -3v2 = 0

Combine like terms: 8v2 + -3v2 = 5v2
-7 + -15v + 5v2 = 0

Solving
-7 + -15v + 5v2 = 0

Solving for variable 'v'.

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

Divide each side by '5'.
-1.4 + -3v + v2 = 0

Move the constant term to the right:

Add '1.4' to each side of the equation.
-1.4 + -3v + 1.4 + v2 = 0 + 1.4

Reorder the terms:
-1.4 + 1.4 + -3v + v2 = 0 + 1.4

Combine like terms: -1.4 + 1.4 = 0.0
0.0 + -3v + v2 = 0 + 1.4
-3v + v2 = 0 + 1.4

Combine like terms: 0 + 1.4 = 1.4
-3v + v2 = 1.4

The v term is -3v.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3v + 2.25 + v2 = 1.4 + 2.25

Reorder the terms:
2.25 + -3v + v2 = 1.4 + 2.25

Combine like terms: 1.4 + 2.25 = 3.65
2.25 + -3v + v2 = 3.65

Factor a perfect square on the left side:
(v + -1.5)(v + -1.5) = 3.65

Calculate the square root of the right side: 1.910497317

Break this problem into two subproblems by setting 
(v + -1.5) equal to 1.910497317 and -1.910497317.

Subproblem 1

v + -1.5 = 1.910497317 Simplifying v + -1.5 = 1.910497317 Reorder the terms: -1.5 + v = 1.910497317 Solving -1.5 + v = 1.910497317 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + v = 1.910497317 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + v = 1.910497317 + 1.5 v = 1.910497317 + 1.5 Combine like terms: 1.910497317 + 1.5 = 3.410497317 v = 3.410497317 Simplifying v = 3.410497317

Subproblem 2

v + -1.5 = -1.910497317 Simplifying v + -1.5 = -1.910497317 Reorder the terms: -1.5 + v = -1.910497317 Solving -1.5 + v = -1.910497317 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + v = -1.910497317 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + v = -1.910497317 + 1.5 v = -1.910497317 + 1.5 Combine like terms: -1.910497317 + 1.5 = -0.410497317 v = -0.410497317 Simplifying v = -0.410497317

Solution

The solution to the problem is based on the solutions from the subproblems. v = {3.410497317, -0.410497317}

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