3v^2+7-4v^2-6v+5=

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Solution for 3v^2+7-4v^2-6v+5= equation:


Simplifying
3v2 + 7 + -4v2 + -6v + 5 = 0

Reorder the terms:
7 + 5 + -6v + 3v2 + -4v2 = 0

Combine like terms: 7 + 5 = 12
12 + -6v + 3v2 + -4v2 = 0

Combine like terms: 3v2 + -4v2 = -1v2
12 + -6v + -1v2 = 0

Solving
12 + -6v + -1v2 = 0

Solving for variable 'v'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-12 + 6v + v2 = 0

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + 6v + 12 + v2 = 0 + 12

Reorder the terms:
-12 + 12 + 6v + v2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 6v + v2 = 0 + 12
6v + v2 = 0 + 12

Combine like terms: 0 + 12 = 12
6v + v2 = 12

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 = 12 + 9

Reorder the terms:
9 + 6v + v2 = 12 + 9

Combine like terms: 12 + 9 = 21
9 + 6v + v2 = 21

Factor a perfect square on the left side:
(v + 3)(v + 3) = 21

Calculate the square root of the right side: 4.582575695

Break this problem into two subproblems by setting 
(v + 3) equal to 4.582575695 and -4.582575695.

Subproblem 1

v + 3 = 4.582575695 Simplifying v + 3 = 4.582575695 Reorder the terms: 3 + v = 4.582575695 Solving 3 + v = 4.582575695 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 = 4.582575695 + -3 Combine like terms: 3 + -3 = 0 0 + v = 4.582575695 + -3 v = 4.582575695 + -3 Combine like terms: 4.582575695 + -3 = 1.582575695 v = 1.582575695 Simplifying v = 1.582575695

Subproblem 2

v + 3 = -4.582575695 Simplifying v + 3 = -4.582575695 Reorder the terms: 3 + v = -4.582575695 Solving 3 + v = -4.582575695 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 = -4.582575695 + -3 Combine like terms: 3 + -3 = 0 0 + v = -4.582575695 + -3 v = -4.582575695 + -3 Combine like terms: -4.582575695 + -3 = -7.582575695 v = -7.582575695 Simplifying v = -7.582575695

Solution

The solution to the problem is based on the solutions from the subproblems. v = {1.582575695, -7.582575695}

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